Shareholder Report, Average Annual Return (Details) 190918_SGI Small Cap Core Fund_Institutional_TSR Annual {Institutional} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Without Sales Load [Member] | Institutional | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I (without sales charge) | ||
| Average Annual Return, Percent | 25.51% | 8.77% | 11.39% |
| S&P Composite 1500 TR [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P Composite 1500 Total Return Index | ||
| Average Annual Return, Percent | 20.31% | 12.39% | 14.98% |
| S&P 600 (TR) [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 600 Total Return Index | ||
| Average Annual Return, Percent | 24.08% | 6.92% | 10.54% |
| Russell 3000 Total Return [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Total Return | ||
| Average Annual Return, Percent | 20.10% | 11.80% | 14.84% |