Investment Risks |
Feb. 04, 2026 |
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| Nicholas Gold Income ETF | Gold Industry Companies Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Gold Industry Companies Risks. Investments in companies engaged in the exploration, mining, refining, and production of gold (Gold Industry Companies) involve greater than average risks and may be considered speculative. The performance of Gold Industry Companies is closely linked to the price of gold bullion (see “Gold Investment Risks” below). The profitability of Gold Industry Companies can be affected by a variety of operational and financial factors, including reserve quality and quantity, production costs, management expertise, and access to capital. Gold Industry Companies are also subject to significant regulatory, environmental, and political risks, particularly in developing or emerging markets where mining operations are often concentrated. In addition, labor disputes, mine safety issues, and changes in government policies or taxation can materially affect a company’s operations and financial condition. Competitive pressures within the industry may further limit profitability. As a result, the value of the Fund’s investments in Gold Industry Companies may be more volatile than investments in other sectors.
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| Nicholas Gold Income ETF | Gold Investment Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Gold Investment Risks. Investments in gold are considered speculative and may involve greater volatility than investments in other asset classes. The price of gold can fluctuate rapidly and unpredictably over short periods and has historically demonstrated a low correlation with the returns of equity and fixed income markets, as well as with other asset classes. The market value of gold is influenced by a wide range of factors, including changes in global supply and demand, central bank policies, interest rates, and currency exchange rates. Gold prices may also be affected by international monetary and political developments, such as currency devaluations or revaluations, trade restrictions, economic sanctions, or social and economic instability within or among nations. Physical gold bullion is subject to additional costs and risks not associated with other financial assets, including expenses related to storage, insurance, transportation, and auditing. Gold production levels may be influenced by factors such as labor conditions, weather events, environmental regulations, and technological changes in extraction or refining processes. In addition, increased hedging or speculative activity by market participants may exacerbate price volatility. Because the price of gold is closely tied to global metal prices and production costs, even short-term fluctuations can materially affect investment values. As a result, the Fund’s exposure to gold investments may cause its share price to be more volatile than that of funds investing primarily in other types of securities.
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| Nicholas Gold Income ETF | Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Concentration Risk. The Fund will have economic exposure that is concentrated to the industry or group of industries assigned to Gold Industry Companies. To the extent that the Fund concentrates in a group of industries, it will be subject to the risk that economic, political, or other conditions that have a negative effect on that group of industries will negatively impact them to a greater extent than if its assets were invested in a wider variety of industries.
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| Nicholas Gold Income ETF | Equity Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors. Factors that could impact the market value of an equity security include a company’s business performance, investor perceptions, stock market trends and general economic conditions.
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| Nicholas Gold Income ETF | Derivatives Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indices. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:
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| Nicholas Gold Income ETF | Futures Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Gold Income ETF | Options Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Cayman Subsidiary Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cayman Subsidiary Risk. By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. The investments held by the Subsidiary are subject to the same economic risks that apply to similar investments if held directly by the Fund. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. Changes in the laws of the United States and the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely suffer decreased investment returns. In addition, the Subsidiary is also subject to many of the risks to which the Fund is subject, such as tax risks, commodity related risks, and market and data risks.
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| Nicholas Gold Income ETF | Commodity Pool Regulatory Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity Pool Regulatory Risk. The Fund’s strategies will cause it to be deemed to be a commodity pool, thereby subjecting the Fund to regulation under the CEA and CFTC rules. The Adviser is registered as a commodity pool operator (“CPO”), and the Fund will be operated in accordance with applicable CFTC rules, as well as the regulatory scheme applicable to registered investment companies. Registration as a CPO imposes additional compliance obligations on the Adviser and the Fund related to additional laws, regulations, and enforcement policies, which could increase compliance costs and may affect the operations and financial performance of the Fund. However, the Fund’s status as a commodity pool and the Adviser’s registration as a CPO are not expected to materially adversely affect the Fund’s ability to achieve its investment objective. The CFTC has not passed on the adequacy of this Prospectus.
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| Nicholas Gold Income ETF | Commodity-Linked Derivatives Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity-Linked Derivatives Tax Risk. The tax treatment of commodity-linked derivative instruments, such as options on certain Underlying Funds, may be adversely affected by changes in legislation, regulations, or other legally binding authority. As a RIC, the Fund must derive at least 90% of its gross income each taxable year from certain qualifying sources of income under the Code. If, as a result of any adverse future legislation, U.S. Treasury regulations, and/or guidance issued by the Internal Revenue Service (the “IRS”), the income of the Fund from certain commodity-linked derivatives, including income from the Fund’s investments in the Subsidiary, were treated as non-qualifying income, the Fund may fail to qualify as RIC and/or be subject to federal income tax at the Fund level. The uncertainty surrounding the treatment of certain derivative instruments under the qualification tests for a RIC may limit the Fund’s use of such derivative instruments.
The Fund intends to limit its investment in the Subsidiary to no more than 25% of the value of its total assets in order to satisfy certain asset diversification requirements for taxation as a regulated investment company. The Fund intends to manage the exposure to the Subsidiary so that the Fund’s investments in the Subsidiary do not exceed 25% of the total assets at the end of any quarter. If the Fund’s investments in the Subsidiary were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
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| Nicholas Gold Income ETF | Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Tax Risk. The Fund intends to treat any income received by the Subsidiary as “qualifying income” under the provisions of the Code applicable to RICs. The IRS has issued numerous private letter rulings (“PLRs”) provided to third parties not associated with the Fund or its affiliates (which only those parties may rely on as precedent) concluding that similar arrangements resulted in qualifying income. Many of such PLRs have now been revoked by the IRS. In March of 2019, the IRS published Regulations that concluded that income from a corporation similar to the Subsidiary would be qualifying income. Although the Regulations do not require distributions from the Subsidiary, the Fund intends to cause the Subsidiary to make distributions that would allow the Fund to make timely distributions to its shareholders and to meet the requirement that the Subsidiary have a value not in excess of 25% of the Fund’s value at the close of a quarter. The Fund generally will be required to include in its own taxable income the income of the Subsidiary for a tax year, regardless of whether the Fund receives a distribution of the Subsidiary’s income in that tax year, and this income would nevertheless be subject to the distribution requirement for qualification as a regulated investment company and would be taken into account for purposes of the 4% excise tax. In addition, to comply with the asset diversification test applicable to a RIC, the Fund will attempt to ensure that the value of options and Underlying Funds it holds whose value is determined by reference to a specific underlying asset is never 25% of the total value of Fund assets at the close of any quarter. If the Fund’s investments in Underlying Funds or options whose value is determined by reference to a specific underlying asset were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
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| Nicholas Gold Income ETF | Counterparty Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in options contracts. Transactions in some types of derivatives, including options, are required to be centrally cleared (“cleared derivatives”). In a transaction involving cleared derivatives, the Fund’s counterparty is a clearing house rather than a bank or broker. Since the Fund is not a member of clearing houses and only members of a clearing house (“clearing members”) can participate directly in the clearing house, the Fund will hold cleared derivatives through accounts at clearing members. In cleared derivatives positions, the Fund will make payments (including margin payments) to and receive payments from a clearing house through their accounts at clearing members. Customer funds held at a clearing organization in connection with any options contracts are held in a commingled omnibus account and are not identified to the name of the clearing member’s individual customers. As a result, assets deposited by the Fund with any clearing member as margin for options may, in certain circumstances, be used to satisfy losses of other clients of the Fund’s clearing member. In addition, although clearing members guarantee performance of their clients’ obligations to the clearing house, there is a risk that the assets of the Fund might not be fully protected in the event of the clearing member’s bankruptcy, as the Fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of the clearing member’s customers for the relevant account class. The Fund is also subject to the risk that a limited number of clearing members are willing to transact on the Fund’s behalf, which heightens the risks associated with a clearing member’s default. If a clearing member defaults the Fund could lose some or all of the benefits of a transaction entered into by the Fund with the clearing member. If the Fund cannot find a clearing member to transact with on the Fund’s behalf, the Fund may be unable to effectively implement its investment strategy.
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| Nicholas Gold Income ETF | Underlying Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Underlying Fund Risk. The Fund’s investment strategy, involving indirect exposure to certain underlying investments through one or more Underlying Funds, is subject to the risks associated with these underlying investments. Shareholders in the Fund bear both their proportionate share of expenses in the Fund and, indirectly, the expenses of the Underlying Funds.
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| Nicholas Gold Income ETF | Potentially No 1940 Act Protections [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Foreign Investment Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Foreign Investment Risk. The Fund will invest in foreign securities, including non-U.S. dollar-denominated securities traded outside of the United States and U.S. dollar-denominated securities of foreign issuers traded in the United States. Returns on investments in foreign securities could be more volatile than, or trail the returns on, investments in U.S. securities. Investments in foreign securities, including investments in American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs), are subject to special risks, including the following:
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| Nicholas Gold Income ETF | Foreign Securities Risk [Member] | ||||
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| Nicholas Gold Income ETF | Depositary Receipt Risk [Member] | ||||
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| Nicholas Gold Income ETF | Emerging Markets Risk [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Market Capitalization Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Market Capitalization Risk.
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| Nicholas Gold Income ETF | Large-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Mid-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Small-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Distribution Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Distribution Risk. As part of the Fund’s investment objective, the Fund seeks to provide weekly distributions. There is no assurance that the Fund will make a distribution in any given week. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, the weekly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.
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| Nicholas Gold Income ETF | NAV Erosion Risk Due to Distributions [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Reverse Repurchase Agreement Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Reverse Repurchase Agreement Risk. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
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| Nicholas Gold Income ETF | ETF Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | ETF Risks.
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| Nicholas Gold Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
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| Nicholas Gold Income ETF | Cash Redemption Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.
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| Nicholas Gold Income ETF | Costs of Buying or Selling Shares [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Shares May Trade at Prices Other Than NAV [Member] | ||||
| Prospectus [Line Items] | ||||
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| Nicholas Gold Income ETF | Trading [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Trading. Although Shares are listed on a national securities exchange, such as NYSE Arca, Inc. (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at a market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged.
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| Nicholas Gold Income ETF | Economic and Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.
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| Nicholas Gold Income ETF | High Portfolio Turnover Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | High Portfolio Turnover Risk. The Fund may actively and frequently trade all or a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.
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| Nicholas Gold Income ETF | Inflation Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.
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| Nicholas Gold Income ETF | Management Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective.
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| Nicholas Gold Income ETF | New Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions.
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| Nicholas Gold Income ETF | Operational Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.
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| Nicholas Gold Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.
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| Nicholas Gold Income ETF | Risk Lose Money [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund. | |||
| Nicholas Gold Income ETF | Risk Nondiversified Status [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.
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| Nicholas Silver Income ETF | Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Concentration Risk. The Fund will have economic exposure that is concentrated to the industry or group of industries assigned to Silver Industry Companies. To the extent that the Fund concentrates in a group of industries, it will be subject to the risk that economic, political, or other conditions that have a negative effect on that group of industries will negatively impact them to a greater extent than if its assets were invested in a wider variety of industries.
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| Nicholas Silver Income ETF | Equity Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors. Factors that could impact the market value of an equity security include a company’s business performance, investor perceptions, stock market trends and general economic conditions.
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| Nicholas Silver Income ETF | Derivatives Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indices. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:
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| Nicholas Silver Income ETF | Futures Contracts [Member] | ||||
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| Risk [Text Block] |
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| Nicholas Silver Income ETF | Options Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Silver Income ETF | Cayman Subsidiary Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cayman Subsidiary Risk. By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. The investments held by the Subsidiary are subject to the same economic risks that apply to similar investments if held directly by the Fund. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. Changes in the laws of the United States and the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely suffer decreased investment returns. In addition, the Subsidiary is also subject to many of the risks to which the Fund is subject, such as tax risks, commodity related risks, and market and data risks.
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| Nicholas Silver Income ETF | Commodity Pool Regulatory Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity Pool Regulatory Risk. The Fund’s strategies will cause it to be deemed to be a commodity pool, thereby subjecting the Fund to regulation under the CEA and CFTC rules. The Adviser is registered as a commodity pool operator (“CPO”), and the Fund will be operated in accordance with applicable CFTC rules, as well as the regulatory scheme applicable to registered investment companies. Registration as a CPO imposes additional compliance obligations on the Adviser and the Fund related to additional laws, regulations, and enforcement policies, which could increase compliance costs and may affect the operations and financial performance of the Fund. However, the Fund’s status as a commodity pool and the Adviser’s registration as a CPO are not expected to materially adversely affect the Fund’s ability to achieve its investment objective. The CFTC has not passed on the adequacy of this Prospectus.
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| Nicholas Silver Income ETF | Commodity-Linked Derivatives Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity-Linked Derivatives Tax Risk. The tax treatment of commodity-linked derivative instruments, such as options on certain Underlying Funds, may be adversely affected by changes in legislation, regulations, or other legally binding authority. As a RIC, the Fund must derive at least 90% of its gross income each taxable year from certain qualifying sources of income under the Code. If, as a result of any adverse future legislation, U.S. Treasury regulations, and/or guidance issued by the Internal Revenue Service (the “IRS”), the income of the Fund from certain commodity-linked derivatives, including income from the Fund’s investments in the Subsidiary, were treated as non-qualifying income, the Fund may fail to qualify as RIC and/or be subject to federal income tax at the Fund level. The uncertainty surrounding the treatment of certain derivative instruments under the qualification tests for a RIC may limit the Fund’s use of such derivative instruments.
The Fund intends to limit its investment in the Subsidiary to no more than 25% of the value of its total assets in order to satisfy certain asset diversification requirements for taxation as a regulated investment company. The Fund intends to manage the exposure to the Subsidiary so that the Fund’s investments in the Subsidiary do not exceed 25% of the total assets at the end of any quarter. If the Fund’s investments in the Subsidiary were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
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| Nicholas Silver Income ETF | Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Tax Risk. The Fund intends to treat any income received by the Subsidiary as “qualifying income” under the provisions of the Code applicable to RICs. The IRS has issued numerous private letter rulings (“PLRs”) provided to third parties not associated with the Fund or its affiliates (which only those parties may rely on as precedent) concluding that similar arrangements resulted in qualifying income. Many of such PLRs have now been revoked by the IRS. In March of 2019, the IRS published Regulations that concluded that income from a corporation similar to the Subsidiary would be qualifying income. Although the Regulations do not require distributions from the Subsidiary, the Fund intends to cause the Subsidiary to make distributions that would allow the Fund to make timely distributions to its shareholders and to meet the requirement that the Subsidiary have a value not in excess of 25% of the Fund’s value at the close of a quarter. The Fund generally will be required to include in its own taxable income the income of the Subsidiary for a tax year, regardless of whether the Fund receives a distribution of the Subsidiary’s income in that tax year, and this income would nevertheless be subject to the distribution requirement for qualification as a regulated investment company and would be taken into account for purposes of the 4% excise tax. In addition, to comply with the asset diversification test applicable to a RIC, the Fund will attempt to ensure that the value of options and Underlying Funds it holds whose value is determined by reference to a specific underlying asset is never 25% of the total value of Fund assets at the close of any quarter. If the Fund’s investments in Underlying Funds or options whose value is determined by reference to a specific underlying asset were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
|
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| Nicholas Silver Income ETF | Counterparty Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in options contracts. Transactions in some types of derivatives, including options, are required to be centrally cleared (“cleared derivatives”). In a transaction involving cleared derivatives, the Fund’s counterparty is a clearing house rather than a bank or broker. Since the Fund is not a member of clearing houses and only members of a clearing house (“clearing members”) can participate directly in the clearing house, the Fund will hold cleared derivatives through accounts at clearing members. In cleared derivatives positions, the Fund will make payments (including margin payments) to and receive payments from a clearing house through their accounts at clearing members. Customer funds held at a clearing organization in connection with any options contracts are held in a commingled omnibus account and are not identified to the name of the clearing member’s individual customers. As a result, assets deposited by the Fund with any clearing member as margin for options may, in certain circumstances, be used to satisfy losses of other clients of the Fund’s clearing member. In addition, although clearing members guarantee performance of their clients’ obligations to the clearing house, there is a risk that the assets of the Fund might not be fully protected in the event of the clearing member’s bankruptcy, as the Fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of the clearing member’s customers for the relevant account class. The Fund is also subject to the risk that a limited number of clearing members are willing to transact on the Fund’s behalf, which heightens the risks associated with a clearing member’s default. If a clearing member defaults the Fund could lose some or all of the benefits of a transaction entered into by the Fund with the clearing member. If the Fund cannot find a clearing member to transact with on the Fund’s behalf, the Fund may be unable to effectively implement its investment strategy.
|
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| Nicholas Silver Income ETF | Underlying Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Underlying Fund Risk. The Fund’s investment strategy, involving indirect exposure to certain underlying investments through one or more Underlying Funds, is subject to the risks associated with these underlying investments. Shareholders in the Fund bear both their proportionate share of expenses in the Fund and, indirectly, the expenses of the Underlying Funds.
|
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| Nicholas Silver Income ETF | Potentially No 1940 Act Protections [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
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| Nicholas Silver Income ETF | Foreign Investment Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Foreign Investment Risk. The Fund will invest in foreign securities, including non-U.S. dollar-denominated securities traded outside of the United States and U.S. dollar-denominated securities of foreign issuers traded in the United States. Returns on investments in foreign securities could be more volatile than, or trail the returns on, investments in U.S. securities. Investments in foreign securities, including investments in American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs), are subject to special risks, including the following:
|
|||
| Nicholas Silver Income ETF | Foreign Securities Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
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| Nicholas Silver Income ETF | Depositary Receipt Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Emerging Markets Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Market Capitalization Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Market Capitalization Risk.
|
|||
| Nicholas Silver Income ETF | Large-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Mid-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Small-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Distribution Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Distribution Risk. As part of the Fund’s investment objective, the Fund seeks to provide weekly distributions. There is no assurance that the Fund will make a distribution in any given week. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, the weekly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.
|
|||
| Nicholas Silver Income ETF | NAV Erosion Risk Due to Distributions [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Reverse Repurchase Agreement Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Reverse Repurchase Agreement Risk. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
|
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| Nicholas Silver Income ETF | ETF Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | ETF Risks.
|
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| Nicholas Silver Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
|
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| Nicholas Silver Income ETF | Cash Redemption Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.
|
|||
| Nicholas Silver Income ETF | Costs of Buying or Selling Shares [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
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| Nicholas Silver Income ETF | Shares May Trade at Prices Other Than NAV [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Silver Income ETF | Trading [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Trading. Although Shares are listed on a national securities exchange, such as NYSE Arca, Inc. (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at a market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged.
|
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| Nicholas Silver Income ETF | Economic and Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.
|
|||
| Nicholas Silver Income ETF | High Portfolio Turnover Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | High Portfolio Turnover Risk. The Fund may actively and frequently trade all or a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.
|
|||
| Nicholas Silver Income ETF | Inflation Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.
|
|||
| Nicholas Silver Income ETF | Management Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective.
|
|||
| Nicholas Silver Income ETF | New Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions.
|
|||
| Nicholas Silver Income ETF | Operational Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.
|
|||
| Nicholas Silver Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.
|
|||
| Nicholas Silver Income ETF | Silver Industry Companies Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Silver Industry Companies Risks. Investments in companies engaged in the exploration, mining, refining, and production of silver (Silver Industry Companies) involve greater than average risks and may be considered speculative. The performance of Silver Industry Companies is closely linked to the price of silver bullion (see “Silver Investment Risks” below). The profitability of Silver Industry Companies may be affected by a variety of operational and financial factors, including reserve quality and quantity, extraction and refining costs, management expertise, and access to financing for exploration and development. Silver Industry Companies are also subject to significant regulatory, environmental, and political risks, particularly in developing or emerging markets where mining operations are often concentrated. In addition, labor disputes, mine safety concerns, environmental compliance costs, and changes in government policies or taxation can materially affect a company’s operations and financial condition. Competitive pressures within the industry, as well as technological advancements that alter extraction or refining methods, may further impact profitability. As a result, the value of the Fund’s investments in Silver Industry Companies may be more volatile than investments in other sectors.
|
|||
| Nicholas Silver Income ETF | Silver Investment Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Silver Investment Risks. Investments in silver are considered speculative and may involve greater volatility than investments in other asset classes. The price of silver can fluctuate rapidly and unpredictably and has historically shown variable correlation with the returns of equity, fixed income, and other asset classes. The market value of silver is influenced by a broad range of factors, including industrial and commercial demand, global supply conditions, inflation expectations, interest rates, and currency exchange rates. Silver prices may also be affected by international monetary and political developments, such as trade imbalances, economic sanctions, and restrictions on the movement of goods or currencies between countries. Physical silver bullion is subject to additional costs and risks not associated with other financial assets, including storage, insurance, transportation, and auditing expenses. Silver production levels may be influenced by operational and environmental factors, labor conditions, mine safety, and technological developments in extraction and refining processes. Additionally, speculative trading and hedging activities in silver or silver-related derivatives may contribute to price volatility. Because the price of silver is closely tied to global metal prices and production costs, even short-term market disruptions can materially affect investment values. Consequently, the Fund’s exposure to silver investments may cause its share price to be more volatile than that of funds investing primarily in other types of securities.
|
|||
| Nicholas Silver Income ETF | Risk Lose Money [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund. | |||
| Nicholas Silver Income ETF | Risk Nondiversified Status [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.
|
|||
| Nicholas Nuclear Income ETF | Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Concentration Risk. The Fund will have economic exposure that is concentrated to the industry or group of industries assigned to Nuclear Industry Companies. To the extent that the Fund concentrates in a group of industries, it will be subject to the risk that economic, political, or other conditions that have a negative effect on that group of industries will negatively impact them to a greater extent than if its assets were invested in a wider variety of industries.
|
|||
| Nicholas Nuclear Income ETF | Equity Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors. Factors that could impact the market value of an equity security include a company’s business performance, investor perceptions, stock market trends and general economic conditions.
|
|||
| Nicholas Nuclear Income ETF | Derivatives Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indices. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:
|
|||
| Nicholas Nuclear Income ETF | Futures Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Options Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Cayman Subsidiary Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cayman Subsidiary Risk. By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. The investments held by the Subsidiary are subject to the same economic risks that apply to similar investments if held directly by the Fund. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. Changes in the laws of the United States and the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely suffer decreased investment returns. In addition, the Subsidiary is also subject to many of the risks to which the Fund is subject, such as tax risks, commodity related risks, and market and data risks.
|
|||
| Nicholas Nuclear Income ETF | Commodity Pool Regulatory Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity Pool Regulatory Risk. The Fund’s strategies will cause it to be deemed to be a commodity pool, thereby subjecting the Fund to regulation under the CEA and CFTC rules. The Adviser is registered as a commodity pool operator (“CPO”), and the Fund will be operated in accordance with applicable CFTC rules, as well as the regulatory scheme applicable to registered investment companies. Registration as a CPO imposes additional compliance obligations on the Adviser and the Fund related to additional laws, regulations, and enforcement policies, which could increase compliance costs and may affect the operations and financial performance of the Fund. However, the Fund’s status as a commodity pool and the Adviser’s registration as a CPO are not expected to materially adversely affect the Fund’s ability to achieve its investment objective. The CFTC has not passed on the adequacy of this Prospectus.
|
|||
| Nicholas Nuclear Income ETF | Commodity-Linked Derivatives Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity-Linked Derivatives Tax Risk. The tax treatment of commodity-linked derivative instruments, such as options on certain Underlying Funds, may be adversely affected by changes in legislation, regulations, or other legally binding authority. As a RIC, the Fund must derive at least 90% of its gross income each taxable year from certain qualifying sources of income under the Code. If, as a result of any adverse future legislation, U.S. Treasury regulations, and/or guidance issued by the Internal Revenue Service (the “IRS”), the income of the Fund from certain commodity-linked derivatives, including income from the Fund’s investments in the Subsidiary, were treated as non-qualifying income, the Fund may fail to qualify as RIC and/or be subject to federal income tax at the Fund level. The uncertainty surrounding the treatment of certain derivative instruments under the qualification tests for a RIC may limit the Fund’s use of such derivative instruments.
The Fund intends to limit its investment in the Subsidiary to no more than 25% of the value of its total assets in order to satisfy certain asset diversification requirements for taxation as a regulated investment company. The Fund intends to manage the exposure to the Subsidiary so that the Fund’s investments in the Subsidiary do not exceed 25% of the total assets at the end of any quarter. If the Fund’s investments in the Subsidiary were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
|
|||
| Nicholas Nuclear Income ETF | Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Tax Risk. The Fund intends to treat any income received by the Subsidiary as “qualifying income” under the provisions of the Code applicable to RICs. The IRS has issued numerous private letter rulings (“PLRs”) provided to third parties not associated with the Fund or its affiliates (which only those parties may rely on as precedent) concluding that similar arrangements resulted in qualifying income. Many of such PLRs have now been revoked by the IRS. In March of 2019, the IRS published Regulations that concluded that income from a corporation similar to the Subsidiary would be qualifying income. Although the Regulations do not require distributions from the Subsidiary, the Fund intends to cause the Subsidiary to make distributions that would allow the Fund to make timely distributions to its shareholders and to meet the requirement that the Subsidiary have a value not in excess of 25% of the Fund’s value at the close of a quarter. The Fund generally will be required to include in its own taxable income the income of the Subsidiary for a tax year, regardless of whether the Fund receives a distribution of the Subsidiary’s income in that tax year, and this income would nevertheless be subject to the distribution requirement for qualification as a regulated investment company and would be taken into account for purposes of the 4% excise tax. In addition, to comply with the asset diversification test applicable to a RIC, the Fund will attempt to ensure that the value of options and Underlying Funds it holds whose value is determined by reference to a specific underlying asset is never 25% of the total value of Fund assets at the close of any quarter. If the Fund’s investments in Underlying Funds or options whose value is determined by reference to a specific underlying asset were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
|
|||
| Nicholas Nuclear Income ETF | Counterparty Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in options contracts. Transactions in some types of derivatives, including options, are required to be centrally cleared (“cleared derivatives”). In a transaction involving cleared derivatives, the Fund’s counterparty is a clearing house rather than a bank or broker. Since the Fund is not a member of clearing houses and only members of a clearing house (“clearing members”) can participate directly in the clearing house, the Fund will hold cleared derivatives through accounts at clearing members. In cleared derivatives positions, the Fund will make payments (including margin payments) to and receive payments from a clearing house through their accounts at clearing members. Customer funds held at a clearing organization in connection with any options contracts are held in a commingled omnibus account and are not identified to the name of the clearing member’s individual customers. As a result, assets deposited by the Fund with any clearing member as margin for options may, in certain circumstances, be used to satisfy losses of other clients of the Fund’s clearing member. In addition, although clearing members guarantee performance of their clients’ obligations to the clearing house, there is a risk that the assets of the Fund might not be fully protected in the event of the clearing member’s bankruptcy, as the Fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of the clearing member’s customers for the relevant account class. The Fund is also subject to the risk that a limited number of clearing members are willing to transact on the Fund’s behalf, which heightens the risks associated with a clearing member’s default. If a clearing member defaults the Fund could lose some or all of the benefits of a transaction entered into by the Fund with the clearing member. If the Fund cannot find a clearing member to transact with on the Fund’s behalf, the Fund may be unable to effectively implement its investment strategy.
|
|||
| Nicholas Nuclear Income ETF | Underlying Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Underlying Fund Risk. The Fund’s investment strategy, involving indirect exposure to certain underlying investments through one or more Underlying Funds, is subject to the risks associated with these underlying investments. Shareholders in the Fund bear both their proportionate share of expenses in the Fund and, indirectly, the expenses of the Underlying Funds.
|
|||
| Nicholas Nuclear Income ETF | Potentially No 1940 Act Protections [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Foreign Investment Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Foreign Investment Risk. The Fund will invest in foreign securities, including non-U.S. dollar-denominated securities traded outside of the United States and U.S. dollar-denominated securities of foreign issuers traded in the United States. Returns on investments in foreign securities could be more volatile than, or trail the returns on, investments in U.S. securities. Investments in foreign securities, including investments in American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs), are subject to special risks, including the following:
|
|||
| Nicholas Nuclear Income ETF | Foreign Securities Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Depositary Receipt Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Emerging Markets Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Market Capitalization Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Market Capitalization Risk.
|
|||
| Nicholas Nuclear Income ETF | Large-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Mid-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Small-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Nuclear Income ETF | Distribution Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Distribution Risk. As part of the Fund’s investment objective, the Fund seeks to provide weekly distributions. There is no assurance that the Fund will make a distribution in any given week. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, the weekly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.
|
|||
| Nicholas Nuclear Income ETF | NAV Erosion Risk Due to Distributions [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Nuclear Income ETF | Reverse Repurchase Agreement Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Reverse Repurchase Agreement Risk. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
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| Nicholas Nuclear Income ETF | ETF Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | ETF Risks.
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| Nicholas Nuclear Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
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| Nicholas Nuclear Income ETF | Cash Redemption Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.
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| Nicholas Nuclear Income ETF | Costs of Buying or Selling Shares [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Nuclear Income ETF | Shares May Trade at Prices Other Than NAV [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Nuclear Income ETF | Trading [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Trading. Although Shares are listed on a national securities exchange, such as NYSE Arca, Inc. (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at a market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged.
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| Nicholas Nuclear Income ETF | Economic and Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.
|
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| Nicholas Nuclear Income ETF | High Portfolio Turnover Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | High Portfolio Turnover Risk. The Fund may actively and frequently trade all or a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.
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| Nicholas Nuclear Income ETF | Inflation Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.
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| Nicholas Nuclear Income ETF | Management Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective.
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| Nicholas Nuclear Income ETF | New Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions.
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| Nicholas Nuclear Income ETF | Operational Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.
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| Nicholas Nuclear Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.
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| Nicholas Nuclear Income ETF | Nuclear Industry Companies Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Nuclear Industry Companies Risks. Investments in Nuclear Industry Companies involve greater than average risks and may be considered speculative. The performance of Nuclear Industry Companies is closely linked to the market price of uranium (see “Uranium Investment Risk” below) and to global demand for nuclear energy. The profitability of Nuclear Industry Companies may be affected by a variety of operational, financial, and regulatory factors, including reserve quality, extraction and processing costs, management expertise, and the availability of financing for exploration, construction, and maintenance of facilities. Nuclear Industry Companies are also subject to significant regulatory oversight, environmental and safety standards, and political risks, particularly given the sensitivity of nuclear energy policy and the management of radioactive materials. In addition, changes in government regulation, taxation, or energy policy, as well as public opposition to nuclear energy or nuclear waste storage, could materially affect a company’s operations and financial condition. Operational incidents, plant shutdowns, and technological or supply-chain disruptions may further impact profitability. As a result, the value of the Fund’s investments in Nuclear Industry Companies may be more volatile than investments in other sectors.
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| Nicholas Nuclear Income ETF | Uranium Investment Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Uranium Investment Risks. Investments in uranium are considered speculative and may involve greater volatility than investments in other asset classes. The price of uranium can fluctuate rapidly and unpredictably and may be influenced by global energy demand, reactor construction and decommissioning trends, geopolitical developments, and government policies regarding nuclear energy and non-proliferation. Uranium markets are also affected by the limited number of suppliers and buyers, as well as by long-term contract structures that can amplify price swings when market conditions change. The market value of uranium may be influenced by factors such as changes in electricity demand, availability of substitute energy sources, technological advances in reactor design, and storage or disposal challenges for nuclear materials. Uranium mining and processing are subject to strict environmental, health, and safety regulations, and companies involved in such activities may incur substantial costs to comply with or adapt to changing regulatory requirements. Disruptions due to political instability in uranium-producing regions, transportation or export restrictions, or accidents involving nuclear facilities can also adversely affect uranium prices. Speculative trading and inventory adjustments by utilities or sovereign entities may further contribute to market volatility. Because uranium prices are influenced by global supply and demand dynamics, policy developments, and production costs, even short-term changes in these factors can materially affect investment values. Consequently, the Fund’s exposure to uranium investments may cause its share price to be more volatile than that of funds investing primarily in other types of securities.
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| Nicholas Nuclear Income ETF | Risk Lose Money [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund. | |||
| Nicholas Nuclear Income ETF | Risk Nondiversified Status [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.
|
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| Nicholas Defense and Rare Earth Income ETF | Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Concentration Risk. The Fund will have economic exposure that is concentrated to the industry or group of industries assigned to Defense and Rare Earth Companies. To the extent that the Fund concentrates in a group of industries, it will be subject to the risk that economic, political, or other conditions that have a negative effect on that group of industries will negatively impact them to a greater extent than if its assets were invested in a wider variety of industries.
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| Nicholas Defense and Rare Earth Income ETF | Equity Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors. Factors that could impact the market value of an equity security include a company’s business performance, investor perceptions, stock market trends and general economic conditions.
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| Nicholas Defense and Rare Earth Income ETF | Derivatives Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indices. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:
|
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| Nicholas Defense and Rare Earth Income ETF | Futures Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Options Contracts [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Cayman Subsidiary Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cayman Subsidiary Risk. By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. The investments held by the Subsidiary are subject to the same economic risks that apply to similar investments if held directly by the Fund. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. Changes in the laws of the United States and the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely suffer decreased investment returns. In addition, the Subsidiary is also subject to many of the risks to which the Fund is subject, such as tax risks, commodity related risks, and market and data risks.
|
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| Nicholas Defense and Rare Earth Income ETF | Commodity Pool Regulatory Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity Pool Regulatory Risk. The Fund’s strategies will cause it to be deemed to be a commodity pool, thereby subjecting the Fund to regulation under the CEA and CFTC rules. The Adviser is registered as a commodity pool operator (“CPO”), and the Fund will be operated in accordance with applicable CFTC rules, as well as the regulatory scheme applicable to registered investment companies. Registration as a CPO imposes additional compliance obligations on the Adviser and the Fund related to additional laws, regulations, and enforcement policies, which could increase compliance costs and may affect the operations and financial performance of the Fund. However, the Fund’s status as a commodity pool and the Adviser’s registration as a CPO are not expected to materially adversely affect the Fund’s ability to achieve its investment objective. The CFTC has not passed on the adequacy of this Prospectus.
|
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| Nicholas Defense and Rare Earth Income ETF | Commodity-Linked Derivatives Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Commodity-Linked Derivatives Tax Risk. The tax treatment of commodity-linked derivative instruments, such as options on certain Underlying Funds, may be adversely affected by changes in legislation, regulations, or other legally binding authority. As a RIC, the Fund must derive at least 90% of its gross income each taxable year from certain qualifying sources of income under the Code. If, as a result of any adverse future legislation, U.S. Treasury regulations, and/or guidance issued by the Internal Revenue Service (the “IRS”), the income of the Fund from certain commodity-linked derivatives, including income from the Fund’s investments in the Subsidiary, were treated as non-qualifying income, the Fund may fail to qualify as RIC and/or be subject to federal income tax at the Fund level. The uncertainty surrounding the treatment of certain derivative instruments under the qualification tests for a RIC may limit the Fund’s use of such derivative instruments.
The Fund intends to limit its investment in the Subsidiary to no more than 25% of the value of its total assets in order to satisfy certain asset diversification requirements for taxation as a regulated investment company. The Fund intends to manage the exposure to the Subsidiary so that the Fund’s investments in the Subsidiary do not exceed 25% of the total assets at the end of any quarter. If the Fund’s investments in the Subsidiary were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
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| Nicholas Defense and Rare Earth Income ETF | Tax Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Tax Risk. The Fund intends to treat any income received by the Subsidiary as “qualifying income” under the provisions of the Code applicable to RICs. The IRS has issued numerous private letter rulings (“PLRs”) provided to third parties not associated with the Fund or its affiliates (which only those parties may rely on as precedent) concluding that similar arrangements resulted in qualifying income. Many of such PLRs have now been revoked by the IRS. In March of 2019, the IRS published Regulations that concluded that income from a corporation similar to the Subsidiary would be qualifying income. Although the Regulations do not require distributions from the Subsidiary, the Fund intends to cause the Subsidiary to make distributions that would allow the Fund to make timely distributions to its shareholders and to meet the requirement that the Subsidiary have a value not in excess of 25% of the Fund’s value at the close of a quarter. The Fund generally will be required to include in its own taxable income the income of the Subsidiary for a tax year, regardless of whether the Fund receives a distribution of the Subsidiary’s income in that tax year, and this income would nevertheless be subject to the distribution requirement for qualification as a regulated investment company and would be taken into account for purposes of the 4% excise tax. In addition, to comply with the asset diversification test applicable to a RIC, the Fund will attempt to ensure that the value of options and Underlying Funds it holds whose value is determined by reference to a specific underlying asset is never 25% of the total value of Fund assets at the close of any quarter. If the Fund’s investments in Underlying Funds or options whose value is determined by reference to a specific underlying asset were to exceed 25% of the Fund’s total assets at the end of a tax quarter, the Fund, generally, has a grace period to cure such lack of compliance. If the Fund fails to timely cure, it may no longer be eligible to be treated as a RIC.
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| Nicholas Defense and Rare Earth Income ETF | Counterparty Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in options contracts. Transactions in some types of derivatives, including options, are required to be centrally cleared (“cleared derivatives”). In a transaction involving cleared derivatives, the Fund’s counterparty is a clearing house rather than a bank or broker. Since the Fund is not a member of clearing houses and only members of a clearing house (“clearing members”) can participate directly in the clearing house, the Fund will hold cleared derivatives through accounts at clearing members. In cleared derivatives positions, the Fund will make payments (including margin payments) to and receive payments from a clearing house through their accounts at clearing members. Customer funds held at a clearing organization in connection with any options contracts are held in a commingled omnibus account and are not identified to the name of the clearing member’s individual customers. As a result, assets deposited by the Fund with any clearing member as margin for options may, in certain circumstances, be used to satisfy losses of other clients of the Fund’s clearing member. In addition, although clearing members guarantee performance of their clients’ obligations to the clearing house, there is a risk that the assets of the Fund might not be fully protected in the event of the clearing member’s bankruptcy, as the Fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of the clearing member’s customers for the relevant account class. The Fund is also subject to the risk that a limited number of clearing members are willing to transact on the Fund’s behalf, which heightens the risks associated with a clearing member’s default. If a clearing member defaults the Fund could lose some or all of the benefits of a transaction entered into by the Fund with the clearing member. If the Fund cannot find a clearing member to transact with on the Fund’s behalf, the Fund may be unable to effectively implement its investment strategy.
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| Nicholas Defense and Rare Earth Income ETF | Underlying Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Underlying Fund Risk. The Fund’s investment strategy, involving indirect exposure to certain underlying investments through one or more Underlying Funds, is subject to the risks associated with these underlying investments. Shareholders in the Fund bear both their proportionate share of expenses in the Fund and, indirectly, the expenses of the Underlying Funds.
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| Nicholas Defense and Rare Earth Income ETF | Potentially No 1940 Act Protections [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Foreign Investment Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Foreign Investment Risk. The Fund will invest in foreign securities, including non-U.S. dollar-denominated securities traded outside of the United States and U.S. dollar-denominated securities of foreign issuers traded in the United States. Returns on investments in foreign securities could be more volatile than, or trail the returns on, investments in U.S. securities. Investments in foreign securities, including investments in American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs), are subject to special risks, including the following:
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| Nicholas Defense and Rare Earth Income ETF | Foreign Securities Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Depositary Receipt Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Emerging Markets Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Market Capitalization Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Market Capitalization Risk.
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| Nicholas Defense and Rare Earth Income ETF | Large-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Mid-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
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| Nicholas Defense and Rare Earth Income ETF | Small-Capitalization Investing [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
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| Nicholas Defense and Rare Earth Income ETF | Distribution Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Distribution Risk. As part of the Fund’s investment objective, the Fund seeks to provide weekly distributions. There is no assurance that the Fund will make a distribution in any given week. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, the weekly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.
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| Nicholas Defense and Rare Earth Income ETF | NAV Erosion Risk Due to Distributions [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Defense and Rare Earth Income ETF | Reverse Repurchase Agreement Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Reverse Repurchase Agreement Risk. Similar to borrowing, reverse repurchase agreements provide the Fund with cash for investment purposes, which creates leverage and subjects the Fund to the risks of leverage. Reverse repurchase agreements also involve the risk that the other party may fail to return the securities in a timely manner or at all. The Fund could lose money if it is unable to recover the securities and/or if the value of collateral held by the Fund, including the value of the investments made with cash collateral, is less than the value of securities.
|
|||
| Nicholas Defense and Rare Earth Income ETF | ETF Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | ETF Risks.
|
|||
| Nicholas Defense and Rare Earth Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
|
|||
| Nicholas Defense and Rare Earth Income ETF | Cash Redemption Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.
|
|||
| Nicholas Defense and Rare Earth Income ETF | Costs of Buying or Selling Shares [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
|||
| Nicholas Defense and Rare Earth Income ETF | Shares May Trade at Prices Other Than NAV [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] |
|
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| Nicholas Defense and Rare Earth Income ETF | Trading [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Trading. Although Shares are listed on a national securities exchange, such as NYSE Arca, Inc. (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at a market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged.
|
|||
| Nicholas Defense and Rare Earth Income ETF | Economic and Market Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.
|
|||
| Nicholas Defense and Rare Earth Income ETF | High Portfolio Turnover Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | High Portfolio Turnover Risk. The Fund may actively and frequently trade all or a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.
|
|||
| Nicholas Defense and Rare Earth Income ETF | Inflation Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.
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| Nicholas Defense and Rare Earth Income ETF | Management Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective.
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| Nicholas Defense and Rare Earth Income ETF | New Fund Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions.
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| Nicholas Defense and Rare Earth Income ETF | Operational Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.
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| Nicholas Defense and Rare Earth Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.
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| Nicholas Defense and Rare Earth Income ETF | Defense and Rare Earth Companies Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Defense and Rare Earth Companies Risks. Investments in Defense and Rare Earth Companies involve greater than average risks and may be considered speculative. The performance of Defense and Rare Earth Companies is closely linked to levels of government defense spending, geopolitical developments, and global demand for critical materials used in advanced technologies, clean energy, and defense applications. The profitability of such companies may be affected by a variety of operational, financial, and political factors, including contract performance, technological innovation, supply-chain reliability, management expertise, and access to financing for exploration, production, or program development. Defense and Rare Earth Companies are subject to significant regulatory, environmental, and political risks, including export controls, cybersecurity mandates, and restrictions on the transfer or use of sensitive technologies and materials. Changes in government policy, defense budgets, or energy and environmental regulation may materially affect operations. Moreover, rare earth production is often geographically concentrated, making supply vulnerable to trade disputes, export restrictions, and political instability in key producing regions. Cost overruns, project delays, and fluctuations in the prices of critical materials may also adversely impact profitability. As a result, the value of the Fund’s investments in Defense and Rare Earth Companies may be more volatile than investments in other sectors.
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| Nicholas Defense and Rare Earth Income ETF | Rare Earth and Critical Materials Investment Risks [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Rare Earth and Critical Materials Investment Risks. Investments in rare earth elements and other critical materials are considered speculative and may involve greater volatility than investments in other asset classes. The prices of these materials can fluctuate rapidly and unpredictably and are influenced by global supply and demand dynamics, industrial and technological innovation, geopolitical developments, and trade and export policies. Rare earth and critical materials markets are highly concentrated, with a limited number of countries and producers accounting for the majority of global supply. As a result, production disruptions, trade restrictions, or export bans by major producing nations may cause significant price volatility. The market value of rare earth and critical materials may also be affected by changes in defense and clean energy demand, technological substitution, recycling advancements, and shifts in environmental or mining regulations. Companies involved in the exploration, extraction, and processing of these materials may face high capital and environmental compliance costs, resource depletion, or operational challenges associated with the handling of hazardous byproducts. In addition, speculative trading, government stockpiling or releases, and fluctuations in global economic conditions may further contribute to price instability. Because the prices of rare earth and critical materials are closely tied to global industrial activity, defense production, and energy transition trends, even short-term market changes can materially affect investment values. Consequently, the Fund’s exposure to rare earth and critical materials investments may cause its share price to be more volatile than that of funds investing primarily in other types of securities.
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| Nicholas Defense and Rare Earth Income ETF | Risk Lose Money [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund. | |||
| Nicholas Defense and Rare Earth Income ETF | Risk Nondiversified Status [Member] | ||||
| Prospectus [Line Items] | ||||
| Risk [Text Block] | Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.
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