Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Tax at federal income tax rate	$ 6,049	$ 7,127	$ 9,617
Tax at federal income tax rate, Rate (as a percent)	21.00%	21.00%	27.50%
Tax exempt income	$ (872)	$ (855)	$ (1,075)
Tax exempt income, Rate (as a percent)	(3.00%)	(2.00%)	(3.00%)
Change in valuation allowance for deferred tax assets, allocated to income tax expense	$ 0	$ (325)	$ 87
Change in valuation allowance for deferred tax assets, allocated to income tax expense, Rate (as a percent)	0.00%	(1.00%)	0.00%
State tax, net of federal benefit	$ 600	$ 756	$ 688
State tax, net of federal benefit, Rate (as a percent)	2.00%	2.00%	2.00%
Tax Cuts and Jobs Act of 2017, Adjustment, Rate Reconciliation	$ 0	$ 0	$ 17,587
Tax Cuts And Jobs Act of 2017, Adjustment, Percent	0.00%	0.00%	50.00%
Other	$ 247	$ 88	$ (168)
Other, Rate (as a percent)	1.00%	0.00%	(1.00%)
Total	$ 6,024	$ 6,791	$ 26,736
Total, Rate (as a percent)	21.00%	20.00%	76.00%