v3.26.3
Small Cap Index Fund Investment Objectives and Goals - Small Cap Index Fund
May 31, 2026
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary: Small Cap Index Fund
Objective [Heading] <span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block] The Fund seeks to provide growth of capital through investment primarily in a diversified portfolio of common stocks that, as a group, the subadviser believes may provide investment results closely corresponding to the performance of the Russell 2000® Index (the “Index”).