Loans, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 1,012,660	$ 798,105
Allowance for loan losses	(16,391)	(13,200)	$ (12,024)
Deferred (fees) and costs	(2,747)	833
Net loans receivable	993,522	785,738
Residential Real Estate [Member] \| Residential Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	279,332	267,802
Allowance for loan losses	(2,091)	(2,026)	(2,116)
Residential Real Estate [Member] \| Construction and Land [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	11,847	7,462
Allowance for loan losses	(141)	(87)	(114)
Residential Real Estate [Member] \| Multi-family [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	25,104	24,592
Allowance for loan losses	(176)	(180)	(162)
Commercial Real Estate [Member] \| Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	381,415	329,668
Allowance for loan losses	(8,634)	(7,110)	(5,979)
Commercial Real Estate [Member] \| Construction [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	74,920	36,361
Allowance for loan losses	(2,053)	(872)	(950)
Consumer Loan [Member] \| Home Equity [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	22,106	23,185
Allowance for loan losses	(295)	(314)	(317)
Consumer Loan [Member] \| Consumer Installment [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	4,817	5,481
Allowance for loan losses	(197)	(250)	(224)
Commercial Loans [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	213,119	103,554
Allowance for loan losses	$ (2,804)	$ (2,361)	$ (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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