Premises and Equipment - Calculated amount of right of use assets and lease liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Operating leases ROU asset	$ 2,700		$ 2,700		$ 2,770
Right of use assets obtained in exchange for lease obligations: Operating Leases			70	$ 40
Consolidated Balance Sheet [Member]
Operating leases ROU asset	2,700		2,700		2,770
Operating leases liability	2,700		2,700		$ 2,770
Consolidated Statement Of Income [Member]
Operating lease costs classified as occupancy and equipment expense (includes short-term lease costs)	98	$ 63	199	135
Supplemental Disclosures Of Cash Flow Information [Member] | Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 85	$ 58	$ 169	$ 126