Loans and Allowance for Loan Losses, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 818,176	$ 798,105
Allowance for loan losses	(13,444)	(13,200)	$ (12,308)	$ (12,024)
Unearned origination fees and costs, net	807	833
Net loans receivable	805,539	785,738
Residential Real Estate [Member] \| Residential Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	267,245	267,802
Allowance for loan losses	(1,512)	(2,026)	(2,108)	(2,116)
Residential Real Estate [Member] \| Construction and Land [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	8,377	7,462
Allowance for loan losses	(99)	(87)	(116)	(114)
Residential Real Estate [Member] \| Multi-family [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	25,021	24,592
Allowance for loan losses	(205)	(180)	(171)	(162)
Commercial Real Estate [Member] \| Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	332,185	329,668
Allowance for loan losses	(7,159)	(7,110)	(6,023)	(5,979)
Commercial Real Estate [Member] \| Construction [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	48,751	36,361
Allowance for loan losses	(1,291)	(872)	(957)	(950)
Consumer Loan [Member] \| Home Equity [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	23,288	23,185
Allowance for loan losses	(307)	(314)	(317)	(317)
Consumer Loan [Member] \| Consumer Installment [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	5,677	5,481
Allowance for loan losses	(319)	(250)	(229)	(224)
Commercial Loans [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	107,632	103,554
Allowance for loan losses	$ (2,552)	$ (2,361)	$ (2,133)	$ (2,128)

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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