v3.26.3
Performance Management
Oct. 28, 2026
Investor Class Shares | SA U.S. Fixed Income Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past

 

performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was (1.06)%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 09/30/2024 2.31%
Worst Quarter 03/31/2022 (3.69)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return (1.06%)
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 2.31%
Highest Quarterly Return, Date Sep. 30, 2024
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (3.69%)
Lowest Quarterly Return, Date Mar. 31, 2022
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 5.85% 1.78% 1.39%
Return After Taxes on Distributions 4.00% 0.65% 0.62%
Return After Taxes on Distributions and Sale of Fund Shares 3.44% 0.86% 0.73%
Morningstar® US Core Bond IndexSM (reflects no deduction for fees, expenses, or taxes)* 7.12% (0.43)% 1.96%
Morningstar® US 1-3 Yr Composite Government and Corporate Bond IndexSM (reflects no deduction for fees, expenses, or taxes)* 5.28% 1.90% 2.07%

 

*The Morningstar® US Core Bond IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance.  The Morningstar® US 1-3 Yr Composite Government and Corporate Bond IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA Global Fixed Income Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was (1.67)%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 09/30/2024 2.51%
Worst Quarter 03/31/2022 (4.63)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return (1.67%)
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 2.51%
Highest Quarterly Return, Date Sep. 30, 2024
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (4.63%)
Lowest Quarterly Return, Date Mar. 31, 2022
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 4.87% 1.16% 1.33%
Return After Taxes on Distributions 2.87% 0.00% 0.38%
Return After Taxes on Distributions and Sale of Fund Shares 2.88% 0.38% 0.61%
Morningstar® Global Core Bond Hedged IndexSM (reflects no deduction for fees, expenses, or taxes)* 4.68% (0.17)% 2.14%
Morningstar® Global 1-5 Yr Treasury Bond Hedged IndexSM (reflects no deduction for fees, expenses, or taxes)* 5.03% 1.99% 2.16%

 

*The Morningstar® Global Core Bond Hedged IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance. The Morningstar® Global 1-5 Yr Treasury Bond Hedged IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA U.S. Core Market Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 

Year Return
2016 11.46%
2017 22.20%
2018 -4.60%
2019 30.48%
2020 18.89%
2021 25.47%
2022 -18.92%
2023 25.80%
2024 22.83%
2025 15.80%
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 1.16%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 06/30/2020 20.65%
Worst Quarter 03/31/2020 (20.02)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return 1.16%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 20.65%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (20.02%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax ratesand do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

Average Annual Total Returns (for periods ended December 31, 2025)

 1 Year 5 Years 10 Years
Return Before Taxes 15.80% 12.73% 13.88%
Return After Taxes on Distributions 15.62% 11.92% 12.53%

Return After Taxes on Distributions and Sale of Fund Shares

9.48%

9.97%

11.13%

Morningstar® US Market Extended IndexSM (reflects no deduction for fees, expenses, or taxes)

17.21%

13.13%

14.31%
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates

 

and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA U.S. Value Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a  

similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a  similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 1.10%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2020 18.32%
Worst Quarter 03/31/2020 (31.76)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return 1.10%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 18.32%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return 31.76%
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 17.69% 11.74% 10.13%
Return After Taxes on Distributions 16.63% 10.71% 8.84%
Return After Taxes on Distributions and Sale of Fund Shares 11.21% 9.19% 7.96%
Morningstar® US Market Extended IndexSM (reflects no deduction for fees, expenses, or taxes)* 17.21% 13.13% 14.31%
Morningstar® US Large-Mid Cap Broad Value IndexSM (reflects no deduction for fees, expenses, or taxes)* 18.83% 13.38% 12.50%

 

*The Morningstar® US Market Extended IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance. The Morningstar® US Large-Mid Cap Broad Value IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA U.S. Small Company Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 

Years Return
2016 22.56%
2017 11.35%
2018 -12.78%
2019 22.15%
2020 12.14%
2021 26.04%
2022 -14.26%
2023 17.24%
2024 11.16%
2025 8.87%
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was (6.75)%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2020 26.52%
Worst Quarter 03/31/2020 (31.37)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return (6.75%)
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 26.52%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (31.37%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 8.87% 8.92% 9.60%
Return After Taxes on Distributions 8.74% 7.44% 8.27%
Return After Taxes on Distributions and Sale of Fund Shares 5.35% 6.81% 7.56%
Morningstar® US Market Extended IndexSM (reflects no deduction for fees, expenses, or taxes)* 17.21% 13.13% 14.31%
Morningstar® US Small Cap Extended Market IndexSM (reflects no deduction for fees, expenses, or taxes)* 11.86% 6.94% 9.67%

 

*The Morningstar® US Market Extended IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance.  The Morningstar® US Small Cap Extended IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.

Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA International Value Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 

Years Returns
2016 7.30%
2017 25.04%
2018 -17.93%
2019 14.61%
2020 -2.47%
2021 17.53%
2022 -3.74%
2023 16.48%
2024 5.49%
2025 44.06%
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 3.85%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2020 21.91%
Worst Quarter 03/31/2020 (30.90)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return 3.85%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 21.91%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (30.90%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 44.06% 14.90% 9.44%
Return After Taxes on Distributions 42.39% 13.97% 8.75%
Return After Taxes on Distributions and Sale of Fund Shares 27.40% 11.88% 7.65%
Morningstar® Developed Markets ex-US All Cap Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 32.36% 9.00% 8.44%
Morningstar® Developed Markets ex-US Value Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 40.48% 13.56% 9.07%

 

*The Morningstar® Developed Markets ex-US All Cap Target Market Exposure IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance.  The Morningstar® Developed Markets ex-US Value Target Market Exposure IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA International Small Company Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 3.15%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 06/30/2020 20.78%
Worst Quarter 03/31/2020 (30.29)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return 3.15%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 20.78%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (30.29%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 35.62% 8.27% 7.96%
Return After Taxes on Distributions 33.79% 7.11% 6.87%
Return After Taxes on Distributions and Sale of Fund Shares 22.36% 6.36% 6.26%
Morningstar® Developed Markets ex-US All Cap Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 32.36% 9.00% 8.44%
Morningstar® Developed Markets ex-US Small-Cap Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 34.54% 5.89% 7.31%

 

*The Morningstar® Developed Markets ex-US All Cap Target Market Exposure IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance.  The Morningstar® Developed Markets ex-US Small-Cap Target Market Exposure IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA Emerging Markets Value Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 

Years Returns
2016 17.13%
2017 31.24%
2018 -12.10%
2019 8.05%
2020 0.90%
2021 10.48%
2022 -11.59%
2023 15.69%
2024 5.47%
2025 29.21%
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 2.77%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2020 22.30%
Worst Quarter 03/31/2020 (32.75)%
Year to Date Return, Label [Optional Text] year-to-date
Bar Chart, Year to Date Return 2.77%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 22.30%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (32.75%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 29.21% 9.02% 8.54%
Return After Taxes on Distributions 28.08% 8.07% 7.93%
Return After Taxes on Distributions and Sale of Fund Shares 17.93% 6.93% 6.90%
Morningstar® Emerging Markets All Cap Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 29.91% 4.82% 8.64%
Morningstar® Emerging Markets Value Target Market Exposure IndexSM (reflects no deduction for fees, expenses, or taxes)* 37.99% 8.87% 10.49%

 

*The Morningstar® Emerging Markets All Cap Target Market Exposure IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance. The Morningstar® Emerging Markets Value Target Market Exposure IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block] After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
Investor Class Shares | SA Real Estate Securities Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

 

Years Return
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was (6.69)%.

 

Highest/lowest quarterly return during the periods shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2023 17.76%
Worst Quarter 03/31/2020 (23.22)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return (6.69%)
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 17.76%
Highest Quarterly Return, Date Dec. 31, 2023
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (23.22%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years 10 Years
Return Before Taxes 0.75% 4.15% 4.65%
Return After Taxes on Distributions -0.23% 2.73% 3.29%
Return After Taxes on Distributions and Sale of Fund Shares 0.75% 3.00% 3.31%
Morningstar® US Market Extended IndexSM (reflects no deduction for fees, expenses, or taxes)* 17.21% 13.13% 14.31%
Morningstar® US REIT IndexSM (reflects no deduction for fees, expenses, or taxes)* 2.80% 4.81% 5.74%

 

*The Morningstar® US Market Extended IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance.  The Morningstar® US REIT IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com
SA Worldwide Moderately Aggressive Fund Investor Class Shares | SA Worldwide Moderately Aggressive Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]

The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns for certain time periods compare to those of a broad-based securities market index. The table also includes the performance of an additional index with a similar investment universe as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Fund performance information can be obtained by visiting http://www.sa-funds.com.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table below provide some indication of the risks of investing in the Fund. The bar chart shows how the Fund’s performance has varied from year to year.
Performance Additional Market Index [Text] The table also includes the performance of an additional index with a similar investment universe as the Fund.
Bar Chart [Heading] Annual Total Returns (per calendar year)
Bar Chart [Table]

  
Bar Chart Closing [Text Block]

The year-to-date return through the calendar quarter ended September 30, 2026 was 0.29%.

 

Highest/lowest quarterly return during the period shown:

 

  Quarter Ended Total Return
Best Quarter 12/31/2020 14.24%
Worst Quarter 03/31/2020 (21.96)%
Year to Date Return, Label [Optional Text] year-to-date return
Bar Chart, Year to Date Return 0.29%
Bar Chart, Year to Date Return, Date Sep. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 14.24%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (21.96%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for periods ended December 31, 2025)
Performance Table Uses Highest Federal Rate After-tax returns 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 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]
Average Annual Total Returns (for periods ended December 31, 2025) 1 Year 5 Years Ten Years
Return Before Taxes 18.16% 9.40% 8.40%
Return After Taxes on Distributions 16.33% 7.78% 7.05%
Return After Taxes on Distributions and Sale of Fund Shares 11.62%

7.05%

 6.46%
Morningstar® Global Markets IndexSM (reflects no deduction for fees, expenses, or taxes)* 22.13% 10.68% 11.40%
Morningstar® US Moderate Target Allocation IndexSM (reflects no deduction for fees, expenses, or taxes)* 14.60% 7.54% 8.88%
(a)July 1, 2015.

 

*The Morningstar® Global IndexSM serves as the Fund’s regulatory index and provides a broad measure of market performance. The Morningstar® US Moderate Target Allocation IndexSM is the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.
Performance Table One Class of after Tax Shown [Text] Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses, or taxes
Performance Table Closing [Text Block]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain situations, the “Return After Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period. A higher after-tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. 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 their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Availability Website Address [Text] http://www.sa-funds.com