v3.26.1
SA Allocation Moderate Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 111 Months Ended 120 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   7.30% (0.36%) 1.56% 2.01%
SA Alloc Mod Blended Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   14.62% 6.52% 8.00% 8.06%
Class 1          
Prospectus [Line Items]          
Average Annual Return, Percent   12.86% 5.75% 7.45%
Performance Inception Date Sep. 26, 2016        
Class 3          
Prospectus [Line Items]          
Average Annual Return, Percent   12.52% 5.48% 7.20%