Loans, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 634,331	$ 531,290
Allowance for loan losses	(11,022)	(9,485)	$ (8,142)
Deferred fees and costs	878	959
Net loans receivable	624,187	522,764
Residential Real Estate [Member] \| Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	245,331	234,992
Allowance for loan losses	(2,289)	(2,396)	(2,454)
Residential Real Estate [Member] \| Construction and Land [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	7,160	5,575
Allowance for loan losses	(89)	(75)	(50)
Residential Real Estate [Member] \| Multi-family [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	9,199	3,918
Allowance for loan losses	(43)	(22)	(40)
Commercial Real Estate [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	257,964	192,678
Allowance for loan losses	(5,589)	(4,541)	(3,699)
Commercial Real Estate [Member] \| Construction [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	28,430	20,159
Allowance for loan losses	(687)	(502)	(233)
Consumer Loan [Member] \| Home Equity [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	21,076	20,893
Allowance for loan losses	(234)	(309)	(314)
Consumer Loan [Member] \| Consumer Installment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	4,790	4,350
Allowance for loan losses	(231)	(228)	(223)
Commercial Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	60,381	48,725
Allowance for loan losses	$ (1,680)	$ (1,412)	$ (1,129)

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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