| Label | Element | Value | ||||||||||||||||
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| The Missouri Tax-Free Intermediate Bond Fund | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk/Return [Heading] | rr_RiskReturnHeading | The Missouri Tax‑Free Intermediate Bond Fund – Summary | ||||||||||||||||
| Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||||||||||||||||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The investment objective of the Fund is to seek current income exempt from federal and, to the extent possible, from Missouri income taxes, as is consistent with the preservation of capital.
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| Expense [Heading] | rr_ExpenseHeading | Fees and Expenses of the Fund | ||||||||||||||||
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and the Example below. There is no sales charge imposed on purchases of shares.
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| Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses | ||||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination | March 1, 2026 | ||||||||||||||||
| Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover | ||||||||||||||||
| Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 29% of the average value of its portfolio.
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| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 29.00% | ||||||||||||||||
| Expense Example [Heading] | rr_ExpenseExampleHeading | Example: | ||||||||||||||||
| Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in this Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in shares of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||
| Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||||||||||||||||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock |
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| Risk [Heading] | rr_RiskHeading | Principal Risks | ||||||||||||||||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Fund Performance | ||||||||||||||||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table below provide an indication of the risks of investing in the Fund by showing: (a) changes in the performance of the Fund’s shares from year to year; and (b) how the average annual total returns of the Fund’s shares compare to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund. The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. To obtain updated performance information, please visit the Fund’s website at www.commercefunds.com or by calling 1-800-995-6365.
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| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table below provide an indication of the risks of investing in the Fund by showing: (a) changes in the performance of the Fund’s shares from year to year; and (b) how the average annual total returns of the Fund’s shares compare to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund. | ||||||||||||||||
| Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | The Bloomberg 3-15 Year Blend Municipal Bond Index is an unmanaged index comprised of investment-grade municipal securities ranging from 2 to 17 years in maturity. | ||||||||||||||||
| Performance Availability Phone [Text] | rr_PerformanceAvailabilityPhone | 1-800-995-6365 | ||||||||||||||||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.commercefunds.com | ||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. | ||||||||||||||||
| Bar Chart [Heading] | rr_BarChartHeading | Year-by-Year Total Returns as of 12/31 Each Year TOTAL RETURNCALENDAR YEAR | ||||||||||||||||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Best Quarter* Q4 ‘23 7.18% Worst Quarter* Q1 ‘22 –5.10% * Please note that “Best Quarter” and “Worst Quarter” figures are applicable only to the time period covered by the bar chart. | ||||||||||||||||
| Performance Table Heading | rr_PerformanceTableHeading | Average Annual Total ReturnsFor the periods endedDecember 31, 2024 | ||||||||||||||||
| Performance Table Market Index Changed | rr_PerformanceTableMarketIndexChanged | In connection with a new regulatory requirement, effective October 31, 2024, the Fund changed its broad based index to the Bloomberg Municipal Bond Index. | ||||||||||||||||
| Index No Deduction for Fees, Expenses, Taxes [Text] | rr_IndexNoDeductionForFeesExpensesTaxes | The Index figures do not reflect any deduction for fees, taxes or expenses. | ||||||||||||||||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | After-tax returns below are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. | ||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold Fund shares through tax-advantaged arrangements such as a 401(k) plan or individual retirement account (IRA). | ||||||||||||||||
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | After-tax returns below are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold Fund shares through tax-advantaged arrangements such as a 401(k) plan or individual retirement account (IRA).
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| The Missouri Tax-Free Intermediate Bond Fund | Risk Lose Money [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | As with any mutual fund, it is possible to losemoney on an investment in the Fund. | ||||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Risk Not Insured Depository Institution [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or anygovernment agency. | ||||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Market Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Market Risk: Certain securities and other investments held by the Fund may experience increased volatility, illiquidity, or other potentially adverse effects in response to changing market conditions, inflation, changes in interest rates, lack of liquidity in the bond or equity markets, volatility in the equity markets, market disruptions caused by local or regional events such as financial institution failures, war, acts of terrorism, the spread of infectious illness (including epidemics and pandemics) or other public health issues, recessions or other events or adverse investor sentiment.
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| The Missouri Tax-Free Intermediate Bond Fund | Investment Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Investment Risk: The value of your investment in this Fund may fluctuate, which means that you could lose money.
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| The Missouri Tax-Free Intermediate Bond Fund | Management Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Management Risk: A strategy used by the Adviser could fail to produce the intended results.
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| The Missouri Tax-Free Intermediate Bond Fund | Large Shareholder Purchase and Redemption Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Large Shareholder Purchase and Redemption Risk: The Fund may experience adverse effects when certain large shareholders purchase or redeem large amounts of shares of the Fund. Such large shareholder redemptions may cause the Fund to sell its securities at times when it would not otherwise do so, which may negatively impact the Fund’s net asset value and liquidity. Similarly, large purchases of the Fund’s shares may also adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. In addition, a large redemption could result in the Fund’s current expenses being allocated over a smaller asset base, leading to an increase in the Fund’s expense ratio.
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| The Missouri Tax-Free Intermediate Bond Fund | Cybersecurity Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Cybersecurity Risk: Cybersecurity breaches may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund and/or its service providers to suffer data corruption or lose operational functionality.
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| The Missouri Tax-Free Intermediate Bond Fund | Interest Rate Risks [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Interest Rate Risk: Interest rate risk is the risk that the value of the Fund’s portfolio will decline when interest rates rise. The magnitude of this decline will often be greater for longer-term, fixed-income securities than shorter-term securities. Changing interest rates may have unpredictable effects on the markets and on the Fund’s investments. Declines in interest rate levels could cause the Fund’s earnings to fall below the Fund’s expense ratio, resulting in a negative yield and a decline in the Fund’s share price. The magnitude of these fluctuations in the market price of bonds and other fixed-income securities is generally greater for those securities with longer maturities. Fluctuations in the market price of the Fund’s investments will not affect interest income derived from instruments already owned by the Fund, but will be reflected in the Fund’s net asset value. The Fund may lose money if short-term or long-term interest rates rise sharply in a manner not anticipated by Fund management. A general rise in interest rates has the potential to cause investors to move out of fixed-income securities on a large scale, which may increase redemptions from funds that hold large amounts of fixed-income securities. Heavy redemptions could cause the Fund to sell assets at inopportune times or at a loss or depressed value and could hurt the Fund’s performance.
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| The Missouri Tax-Free Intermediate Bond Fund | Income Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Income Risk: The Fund’s ability to distribute income to shareholders depends on the yield available from the Fund’s investments. The Fund’s portfolio income may decline when market interest rates fall.
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| The Missouri Tax-Free Intermediate Bond Fund | Credit Risks [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Credit Risk: Credit risk is the risk that an issuer of a municipal bond may be unable or unwilling to make interest and principal payments when due and the related risk that the value of a bond may decline because of concerns about the issuer’s ability or willingness to make such payments. If a bond’s insurer or provider of other credit enhancement fails to fulfill its obligations or loses its credit rating, the value of the bond could drop. This may impair the Fund’s liquidity or cause a deterioration in the Fund’s net asset value. In addition, the Fund may incur expenses in an effort to protect the Fund’s interests or enforce its rights against an issuer, guarantor or counterparty or may be hindered or delayed in exercising these rights.
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| The Missouri Tax-Free Intermediate Bond Fund | Call Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Call Risk: An issuer may exercise its right to pay principal on an obligation held by the Fund earlier than expected. Under these circumstances, the Fund may be unable to recoup all of its initial investment and may also suffer from having to reinvest in lower yielding securities, securities with greater credit risks or securities with other, less favorable features.
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| The Missouri Tax-Free Intermediate Bond Fund | Maturity Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Maturity Risk: The Fund will not necessarily hold its securities to maturity, which could result in loss of principal.
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| The Missouri Tax-Free Intermediate Bond Fund | High Yield Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | High Yield Risk: High yield securities are subject to greater levels of credit and liquidity risk. High yield securities are considered speculative with respect to an issuer’s ability to make principal and interest payments and may be more volatile than higher-rated securities of similar maturity.
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| The Missouri Tax-Free Intermediate Bond Fund | Liquidity Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Liquidity Risk: The Fund may not be able to pay redemption proceeds within the time periods described in this Prospectus because of unusual market conditions, an unusually high number of redemption requests or other reasons. Liquidity risk may result from the lack of an active market or reduced number and capacity of traditional market participants to make a market in fixed income securities, and may be magnified in a rising interest rate environment or other circumstances where investor redemptions from fixed income mutual funds may be higher than normal, causing increased supply in the market due to selling activity. Certain portfolio securities may be less liquid than others, which may make them difficult or impossible to sell at an advantageous time or price.
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| The Missouri Tax-Free Intermediate Bond Fund | Municipal Bond Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Municipal Bond Risk: Municipal securities prices can be significantly affected by political or public health changes as well as uncertainties in the municipal market related to taxation, legislative changes or the rights of municipal security holders. In addition, changes in the supply of and demand for Missouri municipal obligations could cause greater volatility in the value of the Fund’s shares. The actual payment of principal and interest on the Missouri bonds is dependent on the Missouri General Assembly allotting money each fiscal year for payment. If economic conditions in Missouri decline, the payment of principal and interest on Missouri bonds could be adversely affected. Municipal lease obligations and certificates of participation are subject to the added risk that the governmental lessee will fail to appropriate funds to enable it to meet its payment obligations under the lease. While interest earned on municipal securities is generally not subject to federal tax, any interest earned on taxable municipal securities is fully taxable at the federal level and may be subject to tax at the state level.
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| The Missouri Tax-Free Intermediate Bond Fund | Tax Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | Tax Risk: Income from municipal bonds held by the Fund could be declared taxable because of unfavorable changes in tax laws, adverse interpretations by the Internal Revenue Service or state tax authorities, or noncompliant conduct of a bond issuer. In addition, a portion of the Fund’s otherwise exempt-interest dividends may be taxable to those shareholders subject to the federal alternative minimum tax.
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| The Missouri Tax-Free Intermediate Bond Fund | State Specific Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | State-Specific Risk: Because the Fund primarily purchases municipal bonds from Missouri, the Fund is more susceptible to adverse economic, political or regulatory changes affecting municipal bond issuers in that state. Some of the major sectors of Missouri’s economy include agriculture, manufacturing, government, services and trade, transportation and utilities. Downturns in these sectors could therefore have a negative effect on the economy of Missouri or the economies of any of its political subdivisions and the ability of these issuers to repay their obligations with respect to municipal bonds.
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| The Missouri Tax-Free Intermediate Bond Fund | US Territory Risk [Member] | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Risk [Text Block] | rr_RiskTextBlock | U.S. Territory Risk: Adverse political and economic conditions and developments affecting any U.S. territory, commonwealth or possession may, in turn, negatively affect the Fund’s performance, and the Fund’s investments may be more volatile, than if its investments were not so concentrated in such territory.
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| The Missouri Tax-Free Intermediate Bond Fund | Missouri Tax-Free Intermediate Bond Fund | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| Management Fees | rr_ManagementFeesOverAssets | 0.39% | ||||||||||||||||
| Other Expenses | rr_OtherExpensesOverAssets | 0.31% | ||||||||||||||||
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 0.70% | [1] | |||||||||||||||
| 1 Year | rr_ExpenseExampleYear01 | $ 72 | ||||||||||||||||
| 3 Years | rr_ExpenseExampleYear03 | 224 | ||||||||||||||||
| 5 Years | rr_ExpenseExampleYear05 | 390 | ||||||||||||||||
| 10 Years | rr_ExpenseExampleYear10 | $ 871 | ||||||||||||||||
| 2015 | rr_AnnualReturn2015 | 2.67% | ||||||||||||||||
| 2016 | rr_AnnualReturn2016 | 0.07% | ||||||||||||||||
| 2017 | rr_AnnualReturn2017 | 4.50% | ||||||||||||||||
| 2018 | rr_AnnualReturn2018 | 0.80% | ||||||||||||||||
| 2019 | rr_AnnualReturn2019 | 5.93% | ||||||||||||||||
| 2020 | rr_AnnualReturn2020 | 3.87% | ||||||||||||||||
| 2021 | rr_AnnualReturn2021 | 0.68% | ||||||||||||||||
| 2022 | rr_AnnualReturn2022 | (7.04%) | ||||||||||||||||
| 2023 | rr_AnnualReturn2023 | 4.87% | ||||||||||||||||
| 2024 | rr_AnnualReturn2024 | 0.53% | ||||||||||||||||
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter | ||||||||||||||||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Dec. 31, 2023 | ||||||||||||||||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 7.18% | ||||||||||||||||
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter | ||||||||||||||||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Mar. 31, 2022 | ||||||||||||||||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (5.10%) | ||||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | 0.53% | ||||||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 0.49% | ||||||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 1.63% | ||||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Returns After Taxes on Distributions | Missouri Tax-Free Intermediate Bond Fund | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | 0.51% | ||||||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 0.48% | ||||||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 1.61% | ||||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Returns After Taxes on Distributions and Sale of Shares | Missouri Tax-Free Intermediate Bond Fund | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | 1.24% | ||||||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 0.83% | ||||||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 1.75% | ||||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Bloomberg Municipal Bond Index | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | 1.05% | [2] | |||||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 0.99% | [2] | |||||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 2.25% | [2] | |||||||||||||||
| The Missouri Tax-Free Intermediate Bond Fund | Bloomberg 3-15 Year Blend Municipal Bond Index | ||||||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | 0.71% | [3] | |||||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 1.05% | [3] | |||||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 2.12% | [3] | |||||||||||||||
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