Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance		$ 112,369	$ 96,191
Total other comprehensive income net of taxes		578	731
Balance		128,805	112,369
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	[1]		0
Accumulated Other Comprehensive Loss [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance		(1,006)	(1,623)
Other comprehensive (loss) income before reclassification		461	592
Amounts reclassified from accumulated other comprehensive income		117	139
Total other comprehensive income net of taxes		578	731
Balance		(428)	(1,006)
Accumulated Other Comprehensive Loss [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance	[1]		(114)
Unrealized Gain (Losses) on Securities Available-for-sale [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance		832	10
Other comprehensive (loss) income before reclassification		918	936
Amounts reclassified from accumulated other comprehensive income		0	0
Total other comprehensive income net of taxes		918	936
Balance		1,750	832
Unrealized Gain (Losses) on Securities Available-for-sale [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance			(114)
Unrealized Losses on Securities Transferred to Held to Maturity [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance		0	0
Other comprehensive (loss) income before reclassification		0	0
Amounts reclassified from accumulated other comprehensive income		0	0
Total other comprehensive income net of taxes		0	0
Balance		0	0
Unrealized Losses on Securities Transferred to Held to Maturity [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance			0
Pension Benefits [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance		(1,838)	(1,633)
Other comprehensive (loss) income before reclassification		(457)	(344)
Amounts reclassified from accumulated other comprehensive income		117	139
Total other comprehensive income net of taxes		(340)	(205)
Balance		$ (2,178)	(1,838)
Pension Benefits [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Balances and changes in components of accumulated other comprehensive loss [Roll Forward]
Balance			$ 0

[1] See Note 1 Impact of Recent Accounting Pronouncements - cumulative effect of change in measurement of equity securities.