Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	$ 183,283	$ 157,714
Total other comprehensive loss, net of taxes	(3,712)	(6,618)
Balance	184,168	159,586
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(21,408)	(18,383)
Other comprehensive income (loss) before reclassification	(3,712)	(6,618)
Total other comprehensive loss, net of taxes	(3,712)	(6,618)
Balance	(25,120)	(25,001)
Unrealized Losses on Securities Available-for-sale [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(20,531)	(17,268)
Other comprehensive income (loss) before reclassification	(3,712)	(6,618)
Total other comprehensive loss, net of taxes	(3,712)	(6,618)
Balance	(24,243)	(23,886)
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	(877)	(1,115)
Other comprehensive income (loss) before reclassification	0	0
Total other comprehensive loss, net of taxes	0	0
Balance	$ (877)	$ (1,115)