v3.26.3
Shareholder Report, Line Graph (Details) 190918_SGI Small Cap Core Fund_Institutional_TSR Annual {Institutional} - USD ($)
12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2026
Institutional                      
Account Value [Line Items]                      
Accumulated Value $ 2,342,514 $ 2,212,589 $ 1,884,950 $ 1,739,355 $ 1,931,073 $ 1,335,357 $ 1,213,501 $ 1,445,040 $ 1,186,667 $ 1,000,000 $ 2,940,122
S&P Composite 1500 TR [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     S&P Composite 1500 Total Return Index
Accumulated Value 3,357,921 2,918,421 2,308,578 2,000,735 2,253,178 1,701,362 1,415,115 1,391,146 1,158,696 1,000,000 $ 4,039,945
S&P 600 (TR) [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     S&P 600 Total Return Index
Accumulated Value 2,194,532 2,120,185 1,807,277 1,712,529 1,948,768 1,265,677 1,272,672 1,498,262 1,131,094 1,000,000 $ 2,722,902
Russell 3000 Total Return [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Russell 3000 Total Return
Accumulated Value $ 3,321,996 $ 2,867,747 $ 2,273,384 $ 1,981,036 $ 2,284,457 $ 1,717,081 $ 1,413,916 $ 1,395,635 $ 1,160,627 $ 1,000,000 $ 3,989,848