Credit Quality of 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, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	$ 7,040	$ 6,177
Charge-offs	340	108
Recoveries	15	23
Provision	313	444
Allowance for Loan Losses, Ending Balance	7,028	6,536
Allowance for loan losses: Ending balance: individually evaluated for impairment	1,352	1,179
Allowance for loan losses: Ending balance: collectively evaluated for impairment	5,676	5,861
Loans receivables: Ending balance: individually evaluated for impairment	7,910	7,686
Loans Receivable: Ending balance: collectively evaluated for impairment	372,520	358,153
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,627	2,163
Charge-offs	77	39
Recoveries	0	0
Provision	8	226
Allowance for Loan Losses, Ending Balance	2,558	2,350
Allowance for loan losses: Ending balance: individually evaluated for impairment	619	520
Allowance for loan losses: Ending balance: collectively evaluated for impairment	1,939	2,107
Loans receivables: Ending balance: individually evaluated for impairment	3,672	3,434
Loans Receivable: Ending balance: collectively evaluated for impairment	218,776	209,092
Nonresidential mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,476	2,076
Charge-offs	0	0
Recoveries	0	0
Provision	146	28
Allowance for Loan Losses, Ending Balance	2,622	2,104
Allowance for loan losses: Ending balance: individually evaluated for impairment	387	305
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,235	2,171
Loans receivables: Ending balance: individually evaluated for impairment	2,117	2,122
Loans Receivable: Ending balance: collectively evaluated for impairment	94,129	89,360
Residential construction & land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	37	19
Charge-offs	0	0
Recoveries	0	0
Provision	9	24
Allowance for Loan Losses, Ending Balance	46	43
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	46	37
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	3,322	2,691
Commercial construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	392	407
Charge-offs	0	0
Recoveries	0	0
Provision	(36)	(43)
Allowance for Loan Losses, Ending Balance	356	364
Allowance for loan losses: Ending balance: individually evaluated for impairment	323	331
Allowance for loan losses: Ending balance: collectively evaluated for impairment	33	61
Loans receivables: Ending balance: individually evaluated for impairment	1,050	1,057
Loans Receivable: Ending balance: collectively evaluated for impairment	1,352	2,466
Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	139	337
Charge-offs	0	0
Recoveries	0	0
Provision	(29)	(44)
Allowance for Loan Losses, Ending Balance	110	293
Allowance for loan losses: Ending balance: individually evaluated for impairment	16	16
Allowance for loan losses: Ending balance: collectively evaluated for impairment	94	123
Loans receivables: Ending balance: individually evaluated for impairment	463	463
Loans Receivable: Ending balance: collectively evaluated for impairment	4,294	5,048
Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	275	187
Charge-offs	0	0
Recoveries	0	0
Provision	18	182
Allowance for Loan Losses, Ending Balance	293	369
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	293	275
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	20,878	20,371
Consumer installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	222	207
Charge-offs	59	69
Recoveries	15	23
Provision	43	96
Allowance for Loan Losses, Ending Balance	221	257
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	221	222
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,211	4,078
Commercial loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	809	645
Charge-offs	204	0
Recoveries	0	0
Provision	217	39
Allowance for Loan Losses, Ending Balance	822	684
Allowance for loan losses: Ending balance: individually evaluated for impairment	7	7
Allowance for loan losses: Ending balance: collectively evaluated for impairment	815	802
Loans receivables: Ending balance: individually evaluated for impairment	608	610
Loans Receivable: Ending balance: collectively evaluated for impairment	25,558	25,047
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	63	136
Charge-offs	0	0
Recoveries	0	0
Provision	(63)	(64)
Allowance for Loan Losses, Ending Balance	0	72
Allowance for loan losses: Ending balance: individually evaluated for impairment		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment		63
Loans receivables: Ending balance: individually evaluated for impairment		0
Loans Receivable: Ending balance: collectively evaluated for impairment		$ 0