Fair Value of Financial Instruments - Non-Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Assets at fair value
Total assets at fair value	$ 0
Reserves on impaired loans	0	$ 0
Non-recurring basis
Assets at fair value
Total assets at fair value	75	290
Non-recurring basis | Impaired loans
Assets at fair value
Total assets at fair value		190
Non-recurring basis | Other real estate owned
Assets at fair value
Total assets at fair value	75	100
Non-recurring basis | Level 3
Assets at fair value
Total assets at fair value	75	290
Non-recurring basis | Level 3 | Impaired loans
Assets at fair value
Total assets at fair value		190
Non-recurring basis | Level 3 | Other real estate owned
Assets at fair value
Total assets at fair value	$ 75	$ 100