Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	$ 149,584	$ 128,805
Total other comprehensive loss, net of taxes	(17,222)	(733)
Balance	157,714	149,584
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(1,161)	(428)
Other comprehensive (loss) income before reclassification	(17,404)	(890)
Amounts reclassified to other non-interest expense	182	157
Total other comprehensive loss, net of taxes	(17,222)	(733)
Balance	(18,383)	(1,161)
Unrealized Gain (Losses) on Securities Available-for-sale [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	348	1,750
Other comprehensive (loss) income before reclassification	(17,616)	(1,402)
Amounts reclassified to other non-interest expense	0	0
Total other comprehensive loss, net of taxes	(17,616)	(1,402)
Balance	(17,268)	348
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(1,509)	(2,178)
Other comprehensive (loss) income before reclassification	212	512
Amounts reclassified to other non-interest expense	182	157
Total other comprehensive loss, net of taxes	394	669
Balance	$ (1,115)	$ (1,509)