Loans and Allowance for Loan Losses, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 1,049,113	$ 1,012,660
Allowance for loan losses	(17,596)	(16,391)	$ (13,444)	$ (13,200)
Unearned origination fees and costs, net	(2,735)	(2,747)
Net loans receivable	1,028,782	993,522
Residential Real Estate [Member] \| Residential Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	289,502	279,332
Allowance for loan losses	(1,463)	(2,091)	(1,512)	(2,026)
Residential Real Estate [Member] \| Construction and Land [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	9,777	11,847
Allowance for loan losses	(118)	(141)	(99)	(87)
Residential Real Estate [Member] \| Multi-family [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	26,241	25,104
Allowance for loan losses	(180)	(176)	(205)	(180)
Commercial Real Estate [Member] \| Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	415,654	381,415
Allowance for loan losses	(9,384)	(8,634)	(7,159)	(7,110)
Commercial Real Estate [Member] \| Construction [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	71,206	74,920
Allowance for loan losses	(1,961)	(2,053)	(1,291)	(872)
Consumer Loan [Member] \| Home Equity [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	20,701	22,106
Allowance for loan losses	(272)	(295)	(307)	(314)
Consumer Loan [Member] \| Consumer Installment [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	5,180	4,817
Allowance for loan losses	(350)	(197)	(319)	(250)
Commercial Loans [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	210,852	213,119
Allowance for loan losses	(3,868)	$ (2,804)	$ (2,552)	$ (2,361)
Commercial Loans [Member] \| PPP Loans [Member] \| Small Business Administration (SBA) [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 100,500
Percentage of loans guaranteed	100.00%

The percentage of loans guaranteed.

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- Definition

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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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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