v3.26.1
SA Allocation Aggressive 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
Russell 3000® Index (reflects no deduction for fees, expenses or taxes)[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   17.15% 13.15% 14.55% 14.29%
SA Alloc Aggr Blended Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   18.35% 9.54% 10.70% 10.55%
Class 1          
Prospectus [Line Items]          
Average Annual Return, Percent   16.12% 8.31% 9.82%
Performance Inception Date Sep. 26, 2016        
Class 3          
Prospectus [Line Items]          
Average Annual Return, Percent   15.84% 8.05% 9.34%