Fees and Expenses |
Apr. 24, 2026 |
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| NAA ALL CAP VALUE SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example.
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example. | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 104% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 104.00% | |||||||||||||||||||||||||
| NAA LARGE CAP VALUE SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example.
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 82% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 82.00% | |||||||||||||||||||||||||
| NAA LARGE CORE SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example.
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 64% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 64.00% | |||||||||||||||||||||||||
| NAA LARGE GROWTH SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S Class L | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 60% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 60.00% | |||||||||||||||||||||||||
| NAA MID GROWTH SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 104% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 104.00% | |||||||||||||||||||||||||
| NAA SMALL CAP VALUE SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 115% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 115.00% | |||||||||||||||||||||||||
| NAA SMALL GROWTH SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 75% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | 75.00% | |||||||||||||||||||||||||
| NAA SMID-CAP VALUE SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 106% of the average value of its portfolio.
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| Portfolio Turnover, Rate | 106.00% | |||||||||||||||||||||||||
| NAA WORLD EQUITY INCOME SERIES | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Expense Heading [Optional Text] | FEES AND EXPENSES | |||||||||||||||||||||||||
| Expense Narrative [Text Block] | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and additional fees to financial intermediaries, which are not reflected in the table and example. |
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| Shareholder Fees Caption [Optional Text] | Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||
| Shareholder Fees [Table] |
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| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class S Class L | |||||||||||||||||||||||||
| Annual Fund Operating Expenses [Table] |
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| Expense Example [Heading] | Example | |||||||||||||||||||||||||
| Expense Example Narrative [Text Block] | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the periods indicated and then redeem all your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, the operating expenses remain the same, and the contractual agreement to limit expenses remains in effect through the expiration date described above. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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| Expense Example, With Redemption [Table] |
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| Portfolio Turnover [Heading] | Portfolio Turnover | |||||||||||||||||||||||||
| Portfolio Turnover [Text Block] | 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 the Example, affect the Fund’s performance. During the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 119% of the average value of its portfolio.
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| Portfolio Turnover, Rate | 119.00% |