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 of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Loans, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 600,882		$ 531,290
Allowance for loan losses	(10,421)	$ (9,976)	(9,485)	$ (8,611)	$ (8,466)	$ (8,142)
Deferred fees and costs	866		959
Net loans receivable	591,327		522,764
Residential Real Estate [Member] \| Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	238,431		234,992
Allowance for loan losses	(2,234)	(2,242)	(2,396)	(2,392)	(2,386)	(2,454)
Residential Real Estate [Member] \| Construction and Land [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	4,980		5,575
Allowance for loan losses	(63)	(63)	(75)	(70)	(62)	(50)
Residential Real Estate [Member] \| Multi-family [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	3,904		3,918
Allowance for loan losses	(18)	(18)	(22)	(25)	(25)	(40)
Commercial Real Estate [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	246,306		192,678
Allowance for loan losses	(5,365)	(4,981)	(4,541)	(4,020)	(3,814)	(3,699)
Commercial Real Estate [Member] \| Construction [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	25,651		20,159
Allowance for loan losses	(603)	(628)	(502)	(331)	(162)	(233)
Consumer Loan [Member] \| Home Equity [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	20,660		20,893
Allowance for loan losses	(257)	(251)	(309)	(305)	(319)	(314)
Consumer Loan [Member] \| Consumer Installment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	4,714		4,350
Allowance for loan losses	(224)	(168)	(228)	(188)	(240)	(223)
Commercial Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	56,236		48,725
Allowance for loan losses	$ (1,513)	$ (1,492)	$ (1,412)	$ (1,272)	$ (1,252)	$ (1,129)