Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	$ 128,805	$ 112,369
Total other comprehensive (loss) income, net of taxes	(733)	578
Balance	149,584	128,805
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(428)	(1,006)
Other comprehensive (loss) income before reclassification	(890)	461
Amounts reclassified to other non-interest expense	157	117
Total other comprehensive (loss) income, net of taxes	(733)	578
Balance	(1,161)	(428)
Unrealized Gain (Losses) on Securities Available-for-sale [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	1,750	832
Other comprehensive (loss) income before reclassification	(1,402)	918
Amounts reclassified to other non-interest expense	0	0
Total other comprehensive (loss) income, net of taxes	(1,402)	918
Balance	348	1,750
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(2,178)	(1,838)
Other comprehensive (loss) income before reclassification	512	(457)
Amounts reclassified to other non-interest expense	157	117
Total other comprehensive (loss) income, net of taxes	669	(340)
Balance	$ (1,509)	$ (2,178)