Loans and Allowance for Credit Losses - Allowance for off-balance credit exposure (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	$ 3,358	$ 1,805
Provision (benefit) charged to expense	806	374
Balance, end of period	4,164	2,179
Residential Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	58	37
Provision (benefit) charged to expense	135	(3)
Balance, end of period	193	34
Construction Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	2,178	502
Provision (benefit) charged to expense	719	1,171
Balance, end of period	2,897	1,673
Commercial Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	421	188
Provision (benefit) charged to expense	107	(18)
Balance, end of period	528	170
Consumer loans
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	61	218
Provision (benefit) charged to expense		(160)
Balance, end of period	61	58
Commercial loans
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	640	860
Provision (benefit) charged to expense	(155)	(616)
Balance, end of period	$ 485	$ 244