v3.26.1
Organization and Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Jun. 30, 2025
Cash and Cash Equivalents [Line Items]    
Securities purchased under agreements to resell $ 35.4 $ 25.2
Interest-bearing deposits in other depository institutions    
Cash and Cash Equivalents [Line Items]    
Cash 38.1 136.9
Deposits are held in various commercial banks    
Cash and Cash Equivalents [Line Items]    
Cash $ 1.8 $ 1.8