Loans and Allowance for Loan Losses - Regarding interest income recognized on impaired loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Total Loans
Average Investment in Impaired Loans	$ 24,507	$ 22,137	$ 17,273
Interest Income Recognized	1,918	2,854	1,746
Commercial loans
Average Investment in Impaired Loans	5,597	4,212	3,152
Interest Income Recognized	419	926	199
Construction Real Estate
Average Investment in Impaired Loans	1,295	1,297	1,317
Interest Income Recognized	134	246	165
Residential Real Estate
Average Investment in Impaired Loans	1,440	2,081	3,358
Interest Income Recognized	89	112	219
Commercial
Average Investment in Impaired Loans	16,175	14,547	9,446
Interest Income Recognized	$ 1,276	$ 1,570	$ 1,163