S000000878 [Member] Investment Risks - Wasatch Small Cap Value Fund	Sep. 30, 2025
Current Market and Economic Conditions Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Current Market and Economic Conditions Risk. Current market and economic conditions risk is the risk that a particular investment, or shares of the Fund in general, may fall in value due to current market and economic conditions or events. For example, actions taken by the Federal Reserve or foreign central banks may at times result in unusually high market volatility, may negatively impact companies, including banks and financial services companies, and negatively impact Fund performance. U.S. regulators have also proposed from time to time changes to market and issuer regulations which may impact the Fund, and any regulatory changes adopted could adversely impact the Fund’s ability to achieve its investment strategies or make certain investments. Recent and potential future bank failures could result in disruption to the broader banking industry or markets generally and reduce confidence in financial institutions and the economy as a whole, which may also heighten market volatility and reduce liquidity. The ongoing adversarial political climate in the United States, as well as political and diplomatic events both domestic and abroad, have and may continue to have an adverse impact on the U.S. regulatory landscape, markets and investor behavior, which could have a negative impact on the Fund’s investments and operations. Other unexpected political, regulatory and diplomatic events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy. For example, in February 2022, Russia invaded Ukraine which has caused and could continue to cause significant market disruptions and volatility within the markets in Russia, Europe and the United States. The hostilities and sanctions resulting from those hostilities may have a significant impact on certain Fund investments as well as performance and liquidity. Similarly, in October 2023, Hamas launched an attack on Israel, which touched off a strong military response from Israel that closed borders and airspace, damaged infrastructure and resulted in significant civilian and military casualties in Israel and the Gaza Strip. The conflict has reignited regional tensions that threaten to involve other countries and factions. The continuing conflict and its escalation could have a severe adverse effect on the regional economy, currency and companies. These events may negatively impact other regional and global economic markets of the world (including Europe and the United States), companies in such countries and various sectors, industries and markets for securities and commodities globally, such as oil and natural gas. In addition, the Chinese government is engaged in a longstanding dispute with Taiwan, continually threatening an invasion. If the political climate between the United States and China does not improve or continues to deteriorate, if China were to attempt invading Taiwan, or if other geopolitical conflicts develop or worsen, economies, markets and individual securities may be adversely affected, and the value of the Fund’s assets may go down. Accordingly, the hostilities and sanctions resulting from these hostilities may have a negative effect on certain Fund investments, including investments extending beyond any direct or indirect exposure the Fund may have to issuers of such countries or those of adjoining geographic regions. The economies of the United States and its trading partners, as well as the financial markets generally, may be adversely impacted by trade disputes and other matters. For example, the U.S. recently has been in the process of renegotiating many of its global trade relationships and has imposed or threatened to impose significant import tariffs, including with respect to China. Such actions could lead to price volatility and overall decline in U.S. and global investment markets. It is difficult to predict the outcome and impact of any trade negotiations. In addition, a public health crisis and ensuing policies enacted by governments and central banks may cause significant volatility and uncertainty in global financial markets, negatively impacting global growth prospects. As the COVID-19 pandemic illustrated, such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Advancements in technology may also adversely impact markets and the overall performance of the Fund. For instance, the economy may be significantly impacted by the advanced development and increased regulation of artificial intelligence. These events, and any other future events, may adversely affect the prices and liquidity of the Fund’s portfolio investments and could result in disruptions in the trading markets. Further, the interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market.
Stock Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Stock Market Risk. The Fund’s investments may decline in value due to movements in the overall stock market.
Stock Selection Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Stock Selection Risk. The Fund is actively managed, and its performance therefore will reflect, in part, the ability of the portfolio manager(s) to select investments and to make investment decisions that are suited to achieving the Fund’s investment objective. The Advisor does not actively track the composition or weightings of market indexes (including the Fund’s benchmark indexes) or of the broader markets generally. As a result, the Fund could underperform its benchmark indexes and/or other funds with a similar investment objective and/or strategy or it may lose value even when the overall stock market is not in general decline.
Equity Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Equity Securities Risk. Equity securities represent ownership in a company. They may be traded (bought or sold) on a securities exchange or stock market. Stock markets are volatile. The price of equity securities will fluctuate and can decline and reduce the value of a portfolio invested in equity securities. The value of equity securities purchased by the Fund could decline if the financial condition of the companies in which the Fund invests declines or if overall market and economic conditions deteriorate. The value of equity securities may also decline due to factors that affect a particular industry or industries such as labor shortages, an increase in production costs and changes in competitive conditions within an industry. In addition, the value of equity securities may decline due to, among other things, general market conditions not specifically related to a company or industry such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates, changes in government regulations, the political situation, or generally adverse investor sentiment. Certain equity securities may be less liquid, meaning that they may be difficult to sell at a time or price that is desirable, than other types of securities, or they may be illiquid. Some securities exchanges or stock markets may also be less liquid or illiquid due to low trading volume. In addition, equity securities include common stock. Common stock holds the lowest priority in the capital structure of a company and therefore takes the largest share of the company’s risk and its accompanying volatility. The rights of common stockholders generally are subordinate to all other claims on a company’s assets, including preferred stockholders and debt holders with respect to the payment of dividends and upon the liquidation or bankruptcy of the issuing company. The common stock of a company that experiences financial distress may lose significant value or become worthless, and therefore the Fund could lose money if a company in which it invests becomes financially distressed.
Small Cap Company Stock Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small Cap Company Stock Risk. Small-cap stocks may be very sensitive to changing economic conditions and market downturns because the issuers often have narrow markets for their products or services, fewer product lines, and more limited managerial and financial resources than larger issuers. The stocks of small-cap companies may therefore be more volatile and the ability to sell these stocks at a desirable time or price may be more limited. As noted above, the Fund under normal market conditions invests at least 80% of its net assets (plus borrowings for investment purposes) in small-capitalization companies as defined above measured at the time of purchase. In pursuing its investment strategy, the Fund may hold such securities for long periods of time during which the market capitalization of such companies may increase due to market appreciation beyond the $3 billion or the market capitalization of the largest company in the Russell 2000® Index (the “Appreciated Companies”). In accordance with current regulatory requirements, as of the date of this Prospectus, the Fund is not required to sell the portfolio holdings that have increased in value due to market appreciation beyond the definition of a small-capitalization company and as a result, the Fund may at times have significant investments in the Appreciated Companies. During periods when the Fund does not meet the 80% threshold due to the market appreciation of its holdings, the Fund’s future acquisitions will only be in companies meeting its small-capitalization definition at the time of purchase. In addition, to the extent the weighted average market capitalization of the Fund is higher than that of its benchmark or peers, the Fund’s performance compared to the benchmark or peers with similar strategies may differ. On September 20, 2023, the SEC adopted amendments to the investment company name rule, Rule 35d-1, which requires, among other things, funds to review their portfolio investments periodically and if a fund no longer meets its respective 80% test, to take appropriate action to bring the fund back into compliance within a specified period which may include disposing of portfolio securities and may result in realized capital gains. To the extent the Fund falls within the revised rule, the Fund will seek to comply with the conditions of the revised rule upon the SEC’s compliance date currently scheduled as of the date of this Prospectus to be on January 31, 2027, however the compliance date may be subject to additional delays and the requirements of the amended Rule 35d-1 may be subject to additional modifications.
Value Investing Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Value Investing Risk. A value investing strategy attempts to identify strong companies with stocks selling at a discount from their perceived true worth. Value stocks include securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and potentially undervalued. Value investing is subject to the risk that the stocks’ intrinsic values may never be fully recognized or realized by the market, their prices may go down, or that stocks judged to be undervalued may actually be appropriately priced.
Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. In addition, the trading market for a particular security or type of security in which the Fund invests may be significantly less liquid than developed or even emerging markets, and there may be little or no trading volume for a period of time for a particular security. Reduced liquidity will have an adverse impact on the Fund’s ability to sell such securities quickly at a desired price when necessary to meet the Fund’s liquidity needs or in response to a specific economic event. It may be difficult at times to sell such securities at any price, which could impact not only the daily net asset value (NAV) of the Fund, but also the composition of the portfolio if other securities must be sold to meet the Fund’s liquidity needs. Additionally, market quotations for such securities may be volatile and thus affect the daily NAV of the Fund.
Foreign Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign Securities Risk. Foreign securities are generally more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investments in U.S. securities. Securities issued by companies incorporated outside the United States but whose securities are principally traded in the United States are still subject to many of the foreign securities risks such as economic and political risks. Differences in the economic and political environment, the amount of available public information, custody practices for assets, the amount of taxation, limitations on the use or transfer of Fund assets, the degree of market regulation, settlement practices, transaction costs, the potential for permanent or temporary termination of trading, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates, can have a significant adverse effect on the value of a foreign security. More specifically, changes in currency exchange rates will affect the value of non-U.S. securities, the value of dividends and interest earned from such securities and gains and losses realized on the sale of such securities. The value of an investment denominated in a foreign currency will decline in U.S. dollar terms if that currency weakens against the U.S. dollar. The Fund may be invested in the local currency of a foreign country in connection with executing foreign securities transactions. When the Fund executes the securities transactions, there is the risk of the value of the foreign currency increasing or decreasing against the value of the U.S. dollar. While the Fund is permitted to hedge currency risks, the Advisor does not anticipate doing so at this time. Additionally, certain countries may restrict foreign investment in their securities and may utilize formal or informal currency-exchange controls or “capital controls.” Capital controls may impose restrictions on the Fund’s ability to repatriate investments or income. Such capital controls can also have a significant effect on the value of the Fund’s holdings. Other government actions, such as confiscations, the nationalization of companies, the imposition of sanctions, and trade restrictions (including tariffs), could also negatively impact an investment in a foreign security.
Growth Stock Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth Stock Risk. Growth stock prices may be more sensitive to changes in companies’ current or expected earnings than the prices of other stocks, and growth stock prices may fall or may not appreciate in step with the broader securities markets. Growth companies may be newer or smaller companies and may retain a large part of their earnings for research, development or investments in capital assets.
Sector and Industry Weightings Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Sector and Industry Weightings Risk. To the extent the Fund emphasizes, from time to time, investments in a particular sector, the Fund will be subject to a greater degree to the risks particular to that sector, including the sectors described below. Market conditions, interest rates, and economic, political, regulatory, or financial developments could significantly affect all the securities in a single sector. If the Fund invests in a few sectors, it may have increased exposure to the price movements of securities in those sectors. The Fund may also from time to time make significant investments in an industry or industries within a particular sector. The industries that constitute a sector may all react in the same way to economic, political or regulatory events. Adverse conditions in such industry or industries could have a correspondingly adverse effect on the financial condition of issuers. These conditions may cause the value of the Fund’s shares to fluctuate more than the values of shares of funds that invest in a greater variety of investments.
Information Technology Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information Technology Sector Risk. The information technology sector includes companies in the software and services, technology hardware and equipment, and semiconductors and semiconductor equipment industry groups. Companies in the information technology sector are subject to rapid obsolescence of existing technology, short product cycles, falling prices and profits, competition from new market entrants, and general economic conditions. Stocks of companies in the information technology sector, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Technological developments, fixed rate pricing, and the ability to retain skilled employees can significantly affect the industries in the information technology sector.
Industrials Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Industrials Sector Risk. The industrials sector includes companies in the capital goods, commercial and professional services and transportation industry groups, including companies engaged in the business of human capital management, business research and consulting, air freight and logistics, transportation services, airlines, maritime shipping and transportation, ground transportation, transportation infrastructure, and aerospace and defense. Companies in the industrials sector can be significantly affected by general economic trends, including such factors as employment and economic growth, interest rate changes, changes in consumer spending, legislative and government regulation and spending, import controls, commodity prices, and worldwide competition. Changes in the economy, fuel prices, labor agreements, and insurance costs may result in occasional sharp price movements in transportation securities. Aerospace and defense companies rely, to a significant extent, on government demand for their products and services. The financial condition of, and investor interest in, aerospace and defense companies are heavily influenced by government defense spending policies.
Financials Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Financials Sector Risk. The financials sector includes companies in the banks, financial services, and insurance industry groups. Companies in the financials sector are subject to extensive government regulation, can be subject to relatively rapid change due to increasingly blurred distinctions between service segments, and can be significantly affected by the availability and cost of capital funds, changes in interest rates, the rate of corporate and consumer debt defaults, and price competition. Banking companies, including thrifts and mortgage finance and consumer finance companies, may be affected by extensive government regulation, which may limit both the amounts and types of loans and other financial commitments they can make, the interest rates and fees they can charge, and the amount of capital they must maintain. Profitability is largely dependent on the availability and cost of capital funds, and can fluctuate significantly when interest rates change. Credit losses resulting from financial difficulties of borrowers can negatively affect banking companies. Banking companies may also be subject to severe price competition. Competition is high among banking companies and failure to maintain or increase market share may result in lost market value. Capital markets, a sub-industry of financial services, may be affected by extensive government regulation as well as economic and other financial events that could cause fluctuations in the stock market, impacting the overall value of investments. The insurance industry may be affected by extensive government regulation and can be significantly affected by interest rates, general economic conditions, and price and marketing competition. Different segments of the insurance industry can be significantly affected by natural disasters, mortality and morbidity rates, and environmental clean-up.
Consumer Staples Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Consumer Staples Sector Risk. The consumer staples sector includes companies in the consumer staples distribution and retail, food, beverage and tobacco, and household and personal products industry groups. Companies in the consumer staples sector may be affected by demographics and product trends, competitive pricing, food fads, marketing campaigns, environmental factors, changes in consumer demands, the performance of the overall domestic and global economy, interest rates, consumer confidence and spending, and changes in commodity prices. Consumer staples companies may be subject to government regulations that may affect the permissibility of using various food additives and production methods. Tobacco companies may be adversely affected by regulation, legislation and/or litigation.
Health Care Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Health Care Sector Risk. The health care sector includes companies in the health care equipment and services, and pharmaceuticals, biotechnology and life sciences industry groups. Health care companies are strongly affected by worldwide scientific or technological developments. Their products may rapidly become obsolete. Many health care companies are also subject to significant government regulation and may be affected by changes in government policies. Companies in the pharmaceuticals, biotechnology and life sciences industry group in particular are heavily dependent on patent protection, and the expiration of patents may adversely affect the profitability of such companies. These companies are also subject to extensive litigation based on product liability and other similar claims. Many new products are subject to government approval and the process of obtaining government approval can be long and costly, and even approved products are susceptible to obsolescence. These companies are also subject to competitive forces that may make it difficult to increase prices, or that may lead to price reductions.
Operational and Cybersecurity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Operational and Cybersecurity Risk. Cybersecurity breaches may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers to lose proprietary information, suffer data corruption, or lose operational functionality. Such events could cause the Fund to incur regulatory penalties, reputational damage, additional compliance costs associated with corrective measures and/or financial loss. Similar incidents affecting issuers of the Fund’s portfolio companies may negatively impact performance. Operational risk may arise from human error, errors by third parties, communication errors, or technology failures, among other causes. The Fund also relies on a range of services from third-parties, including custody. Any delay or failure in the services provided to the Fund may negatively affect the Fund and its ability to meet its investment objective. Although the Fund and the Fund’s investment adviser seek to reduce operational risks through controls and/or procedures, it is not possible to identify and address all such risks and there is no way to completely protect against or mitigate such risks, especially because the Fund does not directly control the cybersecurity systems of issuers or third-party service providers.
Government and Regulatory Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government and Regulatory Risk. The risk that governments or regulatory authorities may take actions that could adversely affect markets in which the Fund invests and in the economy, more generally. Government and regulatory authorities may also act to increase the scope or burden of regulations applicable to the Fund and to the companies in which the Fund invests. Such legislation or regulation could restrict the ability of the Fund to fully implement its investment strategies, either generally or with respect to certain securities, industries or countries and could limit or preclude the Fund’s ability to achieve its investment objective.
Consumer Discretionary Sector Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Consumer Discretionary Sector Risk. The consumer discretionary sector includes companies in industries such as consumer services, household durables, leisure products, textiles, apparel and luxury goods, hotels, restaurants, retailing, and automobiles. Companies in the consumer discretionary sector may be significantly impacted by the performance of the overall domestic and global economy and by interest rates. The consumer discretionary sector relies heavily on disposable household income and spending. Companies in this sector may be subject to severe competition, which may have an adverse impact on their respective profitability. The retail industry can be significantly affected by changes in demographics, and consumer tastes and shopping habits, which can also affect the demand for, and success of, consumer products and services in the marketplace. The automotive industry is highly cyclical and can be significantly affected by labor relations and fluctuating component prices.
Market Risks [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Risk. Market risk is the risk that a particular security, or shares of the Fund in general, may fall in value. Securities are subject to market fluctuations caused by such factors as economic, political, regulatory or market developments, changes in interest rates and perceived trends in securities prices. Shares of the Fund could decline in value or underperform other investments due to, among other things, market movements over the short-term or over longer periods during more prolonged market downturns. In addition, local, regional or global events such as war, acts of terrorism, spread of infectious diseases or other public health issues, recessions, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund’s portfolio securities or other instruments and could result in disruptions in the trading markets. Any of such circumstances could have a materially negative impact on the value of the Fund’s shares and result in increased market volatility.
Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	All investments carry some degree of risk that will affect the value of the Fund, its investment performance and the price of its shares. As a result, you may lose money if you invest in the Fund.
Risk Not Insured Depository Institution [Member]
Prospectus [Line Items]
Risk [Text Block]	An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

S000000878 [Member] Investment Risks - Wasatch Small Cap Value Fund

Sep. 30, 2025

Current Market and Economic Conditions Risk. Current market and economic conditions risk is the risk that a particular investment, or shares of the Fund in general, may fall in value due to current market and economic conditions or events. For example, actions taken by the Federal Reserve or foreign central banks may at times result in unusually high market volatility, may negatively impact companies, including banks and financial services companies, and negatively impact Fund performance. U.S. regulators have also proposed from time to time changes to market and issuer regulations which may impact the Fund, and any regulatory changes adopted could adversely impact the Fund’s ability to achieve its investment strategies or make certain investments. Recent and potential future bank failures could result in disruption to the broader banking industry or markets generally and reduce confidence in financial institutions and the economy as a whole, which may also heighten market volatility and reduce liquidity. The ongoing adversarial political climate in the United States, as well as political and diplomatic events both domestic and abroad, have and may continue to have an adverse impact on the U.S. regulatory landscape, markets and investor behavior, which could have a negative impact on the Fund’s investments and operations.

Other unexpected political, regulatory and diplomatic events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy. For example, in February 2022, Russia invaded Ukraine which has caused and could continue to cause significant market disruptions and volatility within the markets in Russia, Europe and the United States. The hostilities and sanctions resulting from those hostilities may have a significant impact on certain Fund investments as well as performance and liquidity. Similarly, in October 2023, Hamas launched an attack on Israel, which touched off a strong military response from Israel that closed borders and airspace, damaged infrastructure and resulted in significant civilian and military casualties in Israel and the Gaza Strip. The conflict has reignited regional tensions that threaten to involve other countries and factions. The continuing conflict and its escalation could have a severe adverse effect on the regional economy, currency and companies. These events may negatively impact other regional and global economic markets of the world (including Europe and the United States), companies in such countries and various sectors, industries and markets for securities and commodities globally, such as oil and natural gas. In addition, the Chinese government is engaged in a longstanding dispute with Taiwan, continually threatening an invasion. If the political climate between the United States and China does not improve or continues to deteriorate, if China were to attempt invading Taiwan, or if other geopolitical conflicts develop or worsen, economies, markets and individual securities may be adversely affected, and the value of the Fund’s assets may go down. Accordingly, the hostilities and sanctions resulting from these hostilities may have a negative effect on certain Fund investments, including investments extending beyond any direct or indirect exposure the Fund may have to issuers of such countries or those of adjoining geographic regions.

The economies of the United States and its trading partners, as well as the financial markets generally, may be adversely impacted by trade disputes and other matters. For example, the U.S. recently has been in the process of renegotiating many of its global trade relationships and has imposed or threatened to impose significant import tariffs, including with respect to China. Such actions could lead to price volatility and overall decline in U.S. and global investment markets. It is difficult to predict the outcome and impact of any trade negotiations.

In addition, a public health crisis and ensuing policies enacted by governments and central banks may cause significant volatility and uncertainty in global financial markets, negatively impacting global growth prospects. As the COVID-19 pandemic illustrated, such events may affect certain geographic regions, countries, sectors and industries more significantly than others.

Advancements in technology may also adversely impact markets and the overall performance of the Fund. For instance, the economy may be significantly impacted by the advanced development and increased regulation of artificial intelligence. These events, and any other future events, may adversely affect the prices and liquidity of the Fund’s portfolio investments and could result in disruptions in the trading markets. Further, the interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market.