v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 24 Months Ended 36 Months Ended 48 Months Ended 60 Months Ended 72 Months Ended 84 Months Ended 96 Months Ended 108 Months Ended 120 Months Ended
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2026
SA U.S. Fixed Income Fund                      
Account Value [Line Items]                      
Accumulated Value $ 10,000 $ 10,010 $ 10,027 $ 10,286 $ 10,433 $ 10,382 $ 9,798 $ 9,959 $ 10,484 $ 11,114 $ 11,516
SA Global Fixed Income Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 9,967 9,971 10,360 10,512 10,534 9,744 9,847 10,358 10,946 11,376
SA U.S. Core Market Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,781 13,655 14,924 15,866 22,202 19,440 23,171 28,568 32,319 39,123
SA U.S. Value Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,067 13,225 13,546 11,728 17,494 16,115 17,938 20,801 22,585 30,092
SA U.S. Small Company Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,090 13,859 13,314 11,895 18,894 16,014 18,462 20,572 22,216 29,240
SA International Value Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,581 13,663 12,860 10,594 15,218 13,914 16,286 18,334 22,454 28,950
SA International Small Company Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,287 13,313 12,242 11,353 16,341 13,019 14,563 15,999 19,709 23,140
SA Emerging Markets Value Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,442 13,093 13,219 10,629 15,572 13,225 14,246 16,625 18,344 25,406
SA Real Estate Securities Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 9,702 10,007 11,340 10,493 13,806 12,907 12,268 12,956 14,031 15,986
SA Worldwide Moderate Growth Fund                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,504 12,437 12,752 11,817 15,800 14,383 15,903 17,950 20,048 24,216
SA U.S. Fixed Income Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 9,966 9,926 10,705 11,637 11,602 10,412 10,302 10,566 11,201 11,628
SA U.S. Fixed Income Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 10,036 10,060 10,494 10,939 10,995 10,582 10,632 11,145 11,802 12,173
SA Global Fixed Income Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 9,933 10,105 10,893 11,559 11,548 10,439 10,390 10,790 11,434 11,801
SA Global Fixed Income Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 10,034 10,137 10,579 10,966 10,981 10,621 10,687 11,222 11,908 12,290
SA U.S. Core Market Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,854 13,611 14,857 15,832 22,822 19,593 23,328 28,784 33,147 40,777
SA U.S. Value Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,854 13,611 14,857 15,832 22,822 19,593 23,328 28,784 33,147 40,777
SA U.S. Value Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,678 12,700 13,841 13,259 18,777 17,926 20,275 23,822 26,578 32,837
SA U.S. Small Company Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,854 13,611 14,857 15,832 22,822 19,593 23,328 28,784 33,147 40,777
SA U.S. Small Company Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,185 14,204 13,823 12,606 20,507 15,714 17,895 19,694 21,535 28,287
SA International Value Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,948 12,857 12,894 12,249 16,471 13,545 15,759 17,454 20,776 25,108
SA International Value Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,354 12,952 12,780 10,879 14,931 13,317 15,526 17,494 21,509 27,417
SA International Small Company Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,948 12,857 12,894 12,249 16,471 13,545 15,759 17,454 20,776 25,108
SA International Small Company Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,113 13,427 12,629 12,069 16,693 12,674 13,890 14,968 18,416 22,154
SA Emerging Markets Value Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,188 13,077 13,403 12,917 18,472 14,083 14,588 16,632 18,860 26,188
SA Emerging Markets Value Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 12,681 13,342 14,212 12,257 17,733 14,797 15,689 17,898 20,999 29,606
SA Real Estate Securities Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,854 13,611 14,857 15,832 22,822 19,593 23,328 28,784 33,147 40,777
SA Real Estate Securities Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 9,968 10,410 11,833 11,126 14,665 13,812 13,216 13,960 15,309 17,565
SA Worldwide Moderate Growth Fund Regulatory Index [Member]                      
Account Value [Line Items]                      
Accumulated Value 10,000 11,884 13,178 13,833 14,008 19,617 16,387 19,030 22,570 26,127 32,340
SA Worldwide Moderate Growth Fund Additional Index [Member]                      
Account Value [Line Items]                      
Accumulated Value $ 10,000 $ 11,080 $ 11,971 $ 12,899 $ 13,677 $ 16,904 $ 14,836 $ 16,428 $ 18,746 $ 21,025 $ 24,179