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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Loans and Allowance for Loan Losses, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 775,352		$ 715,641
Allowance for loan losses	(12,846)	$ (12,673)	(12,024)	$ (11,622)	$ (11,352)	$ (11,022)
Deferred fees and costs	779		814
Net loans receivable	763,285		704,431
Residential Real Estate [Member] \| Residential Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	268,292		255,848
Allowance for loan losses	(2,084)	(2,070)	(2,116)	(2,079)	(2,099)	(2,289)
Residential Real Estate [Member] \| Construction and Land [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	6,780		9,951
Allowance for loan losses	(80)	(93)	(114)	(94)	(86)	(89)
Residential Real Estate [Member] \| Multi-family [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	22,131		14,961
Allowance for loan losses	(168)	(180)	(162)	(162)	(95)	(43)
Commercial Real Estate [Member] \| Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	309,235		283,935
Allowance for loan losses	(6,346)	(6,182)	(5,979)	(5,956)	(5,904)	(5,589)
Commercial Real Estate [Member] \| Construction [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	41,486		39,366
Allowance for loan losses	(993)	(876)	(950)	(739)	(603)	(687)
Consumer Loan [Member] \| Home Equity [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	22,208		21,919
Allowance for loan losses	(304)	(322)	(317)	(312)	(312)	(234)
Consumer Loan [Member] \| Consumer Installment [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	5,213		5,017
Allowance for loan losses	(210)	(290)	(224)	(188)	(252)	(231)
Commercial Loans [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	100,007		84,644
Allowance for loan losses	$ (2,281)	$ (2,381)	$ (2,128)	$ (1,975)	$ (2,001)	$ (1,680)