Loans and Allowance for Credit Losses - Collateral dependent loans and related ACL (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Related allowance for credit losses	$ 33,192	$ 33,222	$ 25,139	$ 19,903
Collateral-dependent Loans | 1- to 4-family residential loans
Amortized cost	864	895
Related allowance for credit losses	193	223
Residential Real Estate
Related allowance for credit losses	8,908	11,192	$ 4,875	$ 3,706
Residential Real Estate | Collateral-dependent Loans
Amortized cost	864	895
Related allowance for credit losses	$ 193	$ 223