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Fair Value of Financial Assets and Liabilities - Fair Value of Residual Trust Certificates (Details) - Residual Trust Certificates Held by Third-Parties in Consolidated VIEs - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period $ 377 $ 914
Repayments (306) (908)
Subsequent changes in fair value $ 54 371
Fair value at end of period   $ 377