Premises and Equipment - Calculated amount of right of use assets and lease liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020
ROU assets obtained in exchange for operating lease obligations:			$ 599	$ 1,996
Consolidated Balance Sheet
Operating leases right of use asset	$ 2,507		2,507		$ 1,965
Operating leases liability	2,507		2,507		$ 1,965
Consolidated Statement of Income
Operating lease costs classified as occupancy and equipment expense	107	$ 45	242	153
Supplemental disclosures of cash flow information
ROU assets obtained in exchange for operating lease obligations:	599		599	2,004
Supplemental disclosures of cash flow information | Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 80	$ 39	$ 205	$ 116