Loans Receivable (Details 4) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Residential real estate:
Nonaccrual	$ 6,369	$ 6,232
Loans Past Due Over 90 Days Still Accruing	1,291	1,796
Commercial and industrial [Member]
Residential real estate:
Nonaccrual	1	1
Loans Past Due Over 90 Days Still Accruing
One-to four-family residential real estate [Member]
Residential real estate:
Nonaccrual	4,651	4,545
Loans Past Due Over 90 Days Still Accruing	1,228	1,747
Multifamily [Member]
Residential real estate:
Nonaccrual	682	685
Loans Past Due Over 90 Days Still Accruing
Construction [Member]
Residential real estate:
Nonaccrual
Loans Past Due Over 90 Days Still Accruing	63
Farm [Member]
Residential real estate:
Nonaccrual	310	309
Loans Past Due Over 90 Days Still Accruing
Nonresidential real estate and land [Member]
Residential real estate:
Nonaccrual	720	683
Loans Past Due Over 90 Days Still Accruing		49
Consumer [Member]
Residential real estate:
Nonaccrual	5	9
Loans Past Due Over 90 Days Still Accruing