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		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	$ 7,028	$ 6,536	$ 7,040	$ 6,177
Charge-offs	386	331	726	440
Recoveries	21	18	36	42
Provision	508	541	821	985
Allowance for Loan Losses, Ending Balance	7,171	6,764	7,171	6,764
Allowance for loan losses: Ending balance: individually evaluated for impairment	1,066		1,066		1,179
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6,105		6,105		5,861
Loans receivables: Ending balance: individually evaluated for impairment	7,224		7,224		7,686
Loans Receivable: Ending balance: collectively evaluated for impairment	386,214		386,214		358,153
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,558	2,350	2,627	2,163
Charge-offs	205	234	282	273
Recoveries	0	0	0	0
Provision	419	313	427	539
Allowance for Loan Losses, Ending Balance	2,772	2,429	2,772	2,429
Allowance for loan losses: Ending balance: individually evaluated for impairment	574		574		520
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,198		2,198		2,107
Loans receivables: Ending balance: individually evaluated for impairment	3,124		3,124		3,434
Loans Receivable: Ending balance: collectively evaluated for impairment	222,709		222,709		209,092
Nonresidential mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	2,622	2,104	2,476	2,076
Charge-offs	87	20	87	20
Recoveries	0	0	0	0
Provision	205	162	351	190
Allowance for Loan Losses, Ending Balance	2,740	2,246	2,740	2,246
Allowance for loan losses: Ending balance: individually evaluated for impairment	403		403		305
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,337		2,337		2,171
Loans receivables: Ending balance: individually evaluated for impairment	3,294		3,294		2,122
Loans Receivable: Ending balance: collectively evaluated for impairment	99,533		99,533		89,360
Residential construction & land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	46	43	37	19
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	1	0	10	24
Allowance for Loan Losses, Ending Balance	47	43	47	43
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	47		47		37
Loans receivables: Ending balance: individually evaluated for impairment	0		0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	3,406		3,406		2,691
Commercial construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	356	364	392	407
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(270)	27	(306)	(16)
Allowance for Loan Losses, Ending Balance	86	391	86	391
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0		331
Allowance for loan losses: Ending balance: collectively evaluated for impairment	86		86		61
Loans receivables: Ending balance: individually evaluated for impairment	0		0		1,057
Loans Receivable: Ending balance: collectively evaluated for impairment	3,500		3,500		2,466
Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	110	293	139	337
Charge-offs	24	0	24	0
Recoveries	0	0	0	0
Provision	21	(7)	(8)	(51)
Allowance for Loan Losses, Ending Balance	107	286	107	286
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0		16
Allowance for loan losses: Ending balance: collectively evaluated for impairment	107		107		123
Loans receivables: Ending balance: individually evaluated for impairment	0		0		463
Loans Receivable: Ending balance: collectively evaluated for impairment	4,694		4,694		5,048
Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	293	369	275	187
Charge-offs	8	0	8	0
Recoveries	0	0	0	0
Provision	75	(8)	93	174
Allowance for Loan Losses, Ending Balance	360	361	360	361
Allowance for loan losses: Ending balance: individually evaluated for impairment	86		86		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	274		274		275
Loans receivables: Ending balance: individually evaluated for impairment	200		200		0
Loans Receivable: Ending balance: collectively evaluated for impairment	20,414		20,414		20,371
Consumer installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	221	257	222	207
Charge-offs	61	62	120	132
Recoveries	17	18	32	42
Provision	66	68	109	164
Allowance for Loan Losses, Ending Balance	243	281	243	281
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	243		243		222
Loans receivables: Ending balance: individually evaluated for impairment	0		0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,267		4,267		4,078
Commercial loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	822	684	809	645
Charge-offs	1	15	205	15
Recoveries	4	0	4	0
Provision	(52)	58	165	97
Allowance for Loan Losses, Ending Balance	773	727	773	727
Allowance for loan losses: Ending balance: individually evaluated for impairment	3		3		7
Allowance for loan losses: Ending balance: collectively evaluated for impairment	770		770		802
Loans receivables: Ending balance: individually evaluated for impairment	606		606		610
Loans Receivable: Ending balance: collectively evaluated for impairment	27,691		27,691		25,047
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	0	72	63	136
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	43	(72)	(20)	(136)
Allowance for Loan Losses, Ending Balance	43	0	43	0
Allowance for loan losses: Ending balance: individually evaluated for impairment	0		0		0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	43		43		63
Loans receivables: Ending balance: individually evaluated for impairment	0		0		0
Loans Receivable: Ending balance: collectively evaluated for impairment	$ 0		$ 0		$ 0