Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	$ 138,736	$ 120,546	$ 128,805	$ 112,369
Total other comprehensive (loss) income, net of taxes	(3,886)	421	(4,084)	36
Balance	139,087	123,993	139,087	123,993
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(626)	(1,391)	(428)	(1,006)
Other comprehensive income (loss) before reclassification	(3,886)	421	(4,084)	36
Total other comprehensive (loss) income, net of taxes	(3,886)	421	(4,084)	36
Balance	(4,512)	(970)	(4,512)	(970)
Unrealized Gain (Losses) on Securities Available-for-sale [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	1,552	447	1,750	832
Other comprehensive income (loss) before reclassification	(3,886)	421	(4,084)	36
Total other comprehensive (loss) income, net of taxes	(3,886)	421	(4,084)	36
Balance	(2,334)	868	(2,334)	868
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(2,178)	(1,838)	(2,178)	(1,838)
Other comprehensive income (loss) before reclassification	0	0	0	0
Total other comprehensive (loss) income, net of taxes	0	0	0	0
Balance	$ (2,178)	$ (1,838)	$ (2,178)	$ (1,838)