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Label Element Value
The MidCap Growth Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading The MidCap Growth Fund – Summary
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The investment objective of the Fund is to seek capital appreciation.
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.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses
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 60% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 60.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The “Total Annual Fund Operating Expenses” do not correlate to the ratios of net and total expenses to average net assets provided in the Financial Highlights, which reflect the operating expenses of the Fund and do not include Acquired (Underlying) Fund Fees and Expenses.
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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Under normal market conditions, the Fund invests at least 80% of its net assets plus any borrowings for investment purposes (measured at the time of purchase) in stocks, primarily common stocks, of mid‑cap issuers. These issuers will have public stock market capitalizations within the range of the market capitalization of companies constituting the Russell Midcap® Growth Index (“Index”) at the time of investment. If the market capitalization of a company held by the Fund moves outside this range, the Fund may,
 
but is not required to, sell the securities. The equity capitalization range of public companies in the Index was $927 million to $164.9 billion as of December 31, 2024. The Fund may also invest up to 20% of its net assets in small-cap issuers.
•  
Using a predominately quantitative analysis, with some additional fundamental analysis depending on market conditions, the Fund invests principally in stock of companies that had low price volatility in the past. The Fund’s adviser believes that investing in a portfolio of companies with low price volatility will lead to future capital appreciation.
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The Fund may invest a significant amount of its assets from time to time in technology sectors.
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The Fund will provide shareholders with at least 60 days’ notice before changing its 80% investment policy.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund may invest a significant amount of its assets from time to time in technology sectors.
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.
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 Russell Midcap® Growth Index, an unmanaged index, measures the performance of the mid-cap growth segment of the U.S. equity universe. It includes those Russell Midcap Index companies with higher price-to-book ratios and higher forecasted growth values.
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* Q2 ’20 23.73% Worst Quarter* Q1 ’20 –19.35% * 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 Russell 1000® 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).
The MidCap Growth Fund | Risk Lose Money [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock As with any mutual fund, it is possible to lose money on an investment in the Fund.
The MidCap Growth 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 depositand is not insured or guaranteed by the Federal Deposit Insurance Corporation or anygovernment agency.
The MidCap Growth 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. There is also a risk that a particular style of investing, such as growth, may underperform other styles of investing or the market generally.
The MidCap Growth 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. The types of stocks held by the Fund may not perform as well as other types of stocks.
The MidCap Growth Fund | Equity Securities Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Equity Securities Risk: Common stockholders participate in company profits through dividends and stock market appreciation and, in the event of bankruptcy, distributions, on a pro-rata basis after other claims are satisfied. Many factors affect the value of common stock, including earnings, earnings forecasts, corporate events and factors impacting the issuer’s industry and the market generally. Common stock generally has the greatest appreciation and depreciation potential of all corporate securities.
The MidCap Growth Fund | Quantitative Model Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Quantitative Model Risk: Securities selected using quantitative models may perform differently from the market as a whole for many reasons, including the factors used in building the model and the weights placed on each factor, among others. Results generated by such models may be impaired by errors in human judgment, data imprecision, software or other technology system malfunctions. The quantitative model used by the Adviser to manage the Fund may not perform as expected, particularly in volatile markets.
The MidCap Growth Fund | Management Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Management Risk: A strategy used by the Adviser may fail to produce the intended results.
The MidCap Growth Fund | Issuer Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Issuer Risk: The value of a security owned by the Fund may decline for a reason directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services.
The MidCap Growth Fund | Sector Concentration Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Sector Concentration Risk: Although the Fund will not concentrate in any particular industry, it may be heavily invested in a particular economic sector. If the Fund focuses on one or a few sectors, its performance is likely to be disproportionately affected by developments that significantly affect that sector, including market, economic, political or regulatory developments. Individual sectors may be more volatile and may perform differently than the broader market. The Fund’s performance may also suffer if a sector does not perform as well as the Adviser expected. Prices of securities in the same sector often change collectively regardless of the merits of individual companies.
The MidCap Growth Fund | Information Technology Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Information Technology Sector Risk: The securities of technology companies may be subject to greater price volatility than securities of companies in other sectors. Technology companies may produce or use products or services that prove commercially unsuccessful, or become obsolete, or may be adversely impacted by government regulation. Technology securities may experience significant price movements caused by disproportionate investor optimism or pessimism.
The MidCap Growth Fund | Consumer Discretionary Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Consumer Discretionary Sector Risk: Companies engaged in the consumer discretionary sector are affected by fluctuations in supply and demand and changes in consumer preferences, social trends and marketing campaigns. Changes in consumer spending as a result of world events, political and economic conditions, commodity price volatility, changes in exchange rates, imposition of import controls, increased competition, depletion of resources and labor relations also may adversely affect these companies.
The MidCap Growth Fund | Health Care Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Health Care Sector Risk: Factors such as extensive government regulation, restrictions on government reimbursement for medical expenses, rising costs of medical products, services and facilities, pricing pressure, an increased emphasis on outpatient services, limited number of products, industry innovation, costs associated with obtaining and protecting patents, product liability and other claims, changes in technologies and other market developments can affect companies in the health care sector.
The MidCap Growth 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.
The MidCap Growth 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.
The MidCap Growth Fund | Industrials Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Industrials Sector Risk: Changes in government regulation, world events and economic conditions may adversely affect companies in the industrials sector. In addition, these companies are at risk for environmental and product liability damage claims. Also, commodity price volatility, changes in exchange rates, imposition of import controls, increased competition, depletion of resources, technological developments and labor relations could adversely affect the companies in this sector.
The MidCap Growth Fund | Mid Cap and Small Cap Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Mid‑Cap and Small‑Cap Risk: Investing in securities of smaller and mid‑sized companies may be riskier than investing in larger, more established companies. Smaller and mid‑sized companies are more vulnerable to adverse developments because of more limited product lines, markets or financial resources. Also, these stocks may trade less often and in limited volume compared to larger cap stocks trading on a national securities exchange. The prices of these stocks may be more volatile than the prices of larger company stocks. As a result, the Fund’s net asset value may be subject to rapid and substantial changes.
The MidCap Growth Fund | MidCap Growth Fund  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.49%
Other Expenses rr_OtherExpensesOverAssets 0.34%
Acquired (Underlying) Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.84% [1]
1 Year rr_ExpenseExampleYear01 $ 86
3 Years rr_ExpenseExampleYear03 269
5 Years rr_ExpenseExampleYear05 468
10 Years rr_ExpenseExampleYear10 $ 1,041
2015 rr_AnnualReturn2015 1.35%
2016 rr_AnnualReturn2016 10.90%
2017 rr_AnnualReturn2017 23.37%
2018 rr_AnnualReturn2018 (4.35%)
2019 rr_AnnualReturn2019 34.36%
2020 rr_AnnualReturn2020 23.72%
2021 rr_AnnualReturn2021 19.32%
2022 rr_AnnualReturn2022 (20.32%)
2023 rr_AnnualReturn2023 17.73%
2024 rr_AnnualReturn2024 11.84%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 23.73%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (19.35%)
1 Year rr_AverageAnnualReturnYear01 11.84%
5 Years rr_AverageAnnualReturnYear05 9.14%
10 Years rr_AverageAnnualReturnYear10 10.69%
The MidCap Growth Fund | Returns After Taxes on Distributions | MidCap Growth Fund  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 9.38%
5 Years rr_AverageAnnualReturnYear05 6.94%
10 Years rr_AverageAnnualReturnYear10 8.58%
The MidCap Growth Fund | Returns After Taxes on Distributions and Sale of Shares | MidCap Growth Fund  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.96%
5 Years rr_AverageAnnualReturnYear05 6.92%
10 Years rr_AverageAnnualReturnYear10 8.24%
The MidCap Growth Fund | Russell 1000® Index  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 24.51% [2]
5 Years rr_AverageAnnualReturnYear05 14.28% [2]
10 Years rr_AverageAnnualReturnYear10 12.87% [2]
The MidCap Growth Fund | Russell Midcap® Growth Index  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 22.10% [3]
5 Years rr_AverageAnnualReturnYear05 11.47% [3]
10 Years rr_AverageAnnualReturnYear10 11.54% [3]
[1] The “Total Annual Fund Operating Expenses” do not correlate to the ratios of net and total expenses to average net assets provided in the Financial Highlights, which reflect the operating expenses of the Fund and do not include Acquired (Underlying) Fund Fees and Expenses.
[2] The Russell 1000® Index is an unmanaged market capitalization weighted index of the 1000 largest U.S. companies. The Index figures do not reflect any deduction for fees, taxes or expenses. In connection with a new regulatory requirement, effective October 31, 2024, the Fund changed its broad based index to the Russell 1000® Index.
[3] The Russell Midcap® Growth Index, an unmanaged index, measures the performance of the mid-cap growth segment of the U.S. equity universe. It includes those Russell Midcap Index companies with higher price-to-book ratios and higher forecasted growth values. The Index figures do not reflect any deduction for fees, taxes or expenses.