Loans and Allowance for Credit Losses - Collateral dependent loans and related ACL (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021
Related allowance for credit losses	$ 45,685	$ 37,483	$ 33,192	$ 33,641	$ 32,529	$ 33,222
Collateral-dependent Loans | 1- to 4-family residential loans
Amortized cost	841		864
Related allowance for credit losses	170		193
Residential Real Estate
Related allowance for credit losses	13,465	$ 12,499	8,908	$ 11,186	$ 10,757	$ 11,192
Residential Real Estate | Collateral-dependent Loans
Amortized cost	841		864
Related allowance for credit losses	$ 170		$ 193