Credit Quality of Loans and Allowance for Loan Losses - Delinquent and Nonaccrual Loans by Past Due Status (Details) (USD $)	Sep. 30, 2013 Contract	Jun. 30, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	$ 2,655,000	$ 2,485,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	1,291,000	1,447,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	6,444,000	6,103,000
Total Past Due	10,390,000	10,035,000
Financing Receivable, Recorded Investment, Current	370,040,000	355,804,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	380,430,000	365,839,000
Financing Receivable, Recorded Investment, Nonaccrual Status	7,422,000	6,326,000
Foreclosure period (in years)	2
Financing Receivable, Recorded Investment, Nonaccrual Status	7,422,000	6,326,000
Loans in the process of foreclosure	5,400,000	4,900,000
Nonaccrual Loans With Recent History Of Delinquency Greater Than 90 Days	1,500,000	781,000
Nonaccrual Loans Making Payments Pursuant To Forbearance Agreements	1,300,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	555,000	559,000
Financing Receivable, Modifications In The Past Twelve Months, Number Of Contracts	0
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	693,000	1,255,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	316,000	165,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	3,975,000	3,875,000
Total Past Due	4,984,000	5,295,000
Financing Receivable, Recorded Investment, Current	217,464,000	207,231,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	222,448,000	212,526,000
Financing Receivable, Recorded Investment, Nonaccrual Status	4,067,000	3,599,000
Financing Receivable, Recorded Investment, Nonaccrual Status	4,067,000	3,599,000
Nonresidential mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,160,000	215,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	971,000	978,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,540,000	1,655,000
Total Past Due	3,671,000	2,848,000
Financing Receivable, Recorded Investment, Current	92,575,000	88,634,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	96,246,000	91,482,000
Financing Receivable, Recorded Investment, Nonaccrual Status	2,269,000	2,018,000
Financing Receivable, Recorded Investment, Nonaccrual Status	2,269,000	2,018,000
Residential construction & land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	38,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	38,000
Financing Receivable, Recorded Investment, Current	3,322,000	2,653,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	3,322,000	2,691,000
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Financing Receivable, Recorded Investment, Current	2,402,000	3,523,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	2,402,000	3,523,000
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	143,000	144,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	463,000	463,000
Total Past Due	606,000	607,000
Financing Receivable, Recorded Investment, Current	4,151,000	4,904,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	4,757,000	5,511,000
Financing Receivable, Recorded Investment, Nonaccrual Status	463,000	463,000
Financing Receivable, Recorded Investment, Nonaccrual Status	463,000	463,000
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	8,000	269,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	221,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	254,000	28,000
Total Past Due	262,000	518,000
Financing Receivable, Recorded Investment, Current	20,616,000	19,853,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	20,878,000	20,371,000
Financing Receivable, Recorded Investment, Nonaccrual Status	300,000	51,000
Financing Receivable, Recorded Investment, Nonaccrual Status	300,000	51,000
Consumer installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	79,000	34,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	2,000	5,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	6,000	0
Total Past Due	87,000	39,000
Financing Receivable, Recorded Investment, Current	4,124,000	4,039,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	4,211,000	4,078,000
Financing Receivable, Recorded Investment, Nonaccrual Status	6,000	0
Financing Receivable, Recorded Investment, Nonaccrual Status	6,000	0
Commercial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	572,000	530,000
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	2,000	78,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	206,000	82,000
Total Past Due	780,000	690,000
Financing Receivable, Recorded Investment, Current	25,386,000	24,967,000
Loans and Leases Receivable, Gross, Carrying Amount, Total	26,166,000	25,657,000
Financing Receivable, Recorded Investment, Nonaccrual Status	317,000	195,000
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 317,000	$ 195,000