Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	$ 128,805	$ 112,369
Total other comprehensive loss, net of taxes	(190)	(271)
Balance	133,022	116,529
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(428)	(1,006)
Other comprehensive loss before reclassification	(190)	(271)
Total other comprehensive loss, net of taxes	(190)	(271)
Balance	(618)	(1,277)
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 before reclassification	(190)	(271)
Total other comprehensive loss, net of taxes	(190)	(271)
Balance	1,560	561
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(2,178)	(1,838)
Other comprehensive loss before reclassification	0	0
Total other comprehensive loss, net of taxes	0	0
Balance	$ (2,178)	$ (1,838)