v3.26.3
Shareholder Report, Average Annual Return (Details) 197972_US Treasury 3 Month Bill Fund_Institutional Class Shares_TSR Annual {Institutional Class Shares}
7 Months Ended 12 Months Ended
Aug. 31, 2026
Aug. 31, 2026
Without Sales Load [Member] | Institutional Class Shares    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Institutional Class Shares (without sales charge)
Average Annual Return, Percent 2.00%  
ICE US Treasury Core Bond Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   ICE US Treasury Core Bond Index
Average Annual Return, Percent (0.96%)  
ICE BofA 3 Month Treasury Bill [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   ICE BofA 3 Month Treasury Bill
Average Annual Return, Percent 2.00%  
Bloomberg U.S. Treasury Bellwether: 3 Month Total Return USD Unhedged Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Bloomberg U.S. Treasury Bellwether: 3 Month Total Return USD Unhedged Index
Average Annual Return, Percent 2.02%