Loans and Allowance for Loan Losses - Activity and Allocation of Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	$ 7,419	$ 7,040
Charge-offs	129	340
Recoveries	19	15
Provision	411	313
Allowance for Loan Losses, Ending Balance	7,720	7,028
Allowance for loan losses: Ending balance: individually evaluated for impairment	775		869
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6,945		6,550
Loans receivables: Ending balance: individually evaluated for impairment	6,472		6,838
Loans Receivable: Ending balance: collectively evaluated for impairment	407,071		399,003
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,731	2,627
Charge-offs	74	77
Recoveries	0	0
Provision	(10)	8
Allowance for Loan Losses, Ending Balance	2,647	2,558
Allowance for loan losses: Ending balance: individually evaluated for impairment	370		441
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,277		2,290
Loans receivables: Ending balance: individually evaluated for impairment	2,672		2,906
Loans Receivable: Ending balance: collectively evaluated for impairment	223,327		224,467
Nonresidential mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,936	2,476
Charge-offs	0	0
Recoveries	0	0
Provision	228	146
Allowance for Loan Losses, Ending Balance	3,164	2,622
Allowance for loan losses: Ending balance: individually evaluated for impairment	315		338
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,849		2,598
Loans receivables: Ending balance: individually evaluated for impairment	2,904		3,033
Loans Receivable: Ending balance: collectively evaluated for impairment	116,576		111,033
Residential construction and land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	42	37
Charge-offs	0	0
Recoveries	0	0
Provision	(1)	9
Allowance for Loan Losses, Ending Balance	41	46
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	41		42
Loans receivables: Ending balance: individually evaluated for impairment	0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	2,922		3,005
Commercial construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	38	392
Charge-offs	0	0
Recoveries	0	0
Provision	71	(36)
Allowance for Loan Losses, Ending Balance	109	356
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	109		38
Loans receivables: Ending balance: individually evaluated for impairment	0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,155		1,558
Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	59	139
Charge-offs	0	0
Recoveries	0	0
Provision	(14)	(29)
Allowance for Loan Losses, Ending Balance	45	110
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	45		59
Loans receivables: Ending balance: individually evaluated for impairment	0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,518		4,059
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	361	275
Charge-offs	0	0
Recoveries	0	0
Provision	15	18
Allowance for Loan Losses, Ending Balance	376	293
Allowance for loan losses: Ending balance: individually evaluated for impairment	87		87
Allowance for loan losses: Ending balance: collectively evaluated for impairment	289		274
Loans receivables: Ending balance: individually evaluated for impairment	296		296
Loans Receivable: Ending balance: collectively evaluated for impairment	20,807		20,282
Consumer installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	240	222
Charge-offs	55	59
Recoveries	19	15
Provision	39	43
Allowance for Loan Losses, Ending Balance	243	221
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	243		240
Loans receivables: Ending balance: individually evaluated for impairment	0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,181		4,208
Commercial loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	811	809
Charge-offs	0	204
Recoveries	0	0
Provision	20	217
Allowance for Loan Losses, Ending Balance	831	822
Allowance for loan losses: Ending balance: individually evaluated for impairment	3		3
Allowance for loan losses: Ending balance: collectively evaluated for impairment	828		808
Loans receivables: Ending balance: individually evaluated for impairment	600		603
Loans Receivable: Ending balance: collectively evaluated for impairment	30,585		30,391
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	201	63
Charge-offs	0	0
Recoveries	0	0
Provision	63	(63)
Allowance for Loan Losses, Ending Balance	264	0
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	264		201
Loans receivables: Ending balance: individually evaluated for impairment	0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	$ 0		$ 0