Loans and Allowance for Loan Losses - Commercial Real Estate Lending (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Maximum
Term for Automobile Loans	66 months
Secured by Properties Located Outside Lending Area [Member]
Loans Receivable	$ 281,400
Commercial
Loans Receivable	$ 887,419	$ 840,777
Commercial | Maximum
Amortization Period	25 years
Residential
Loans Receivable	$ 627,357	491,992
Residential | Maximum
Amortization Period	30 years
Consumer loans
Loans Receivable	$ 80,767	$ 97,534
Amortization Period For 80% Loan To Value Ratio	25 years
Amortization Period For 75% Loan To Value Ratio	30 years