Loans Receivable and Related Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Performing, Accruing Loans Not Past Due	$ 335,709	$ 329,165
Performing, Accruing 30-59 Days Past Due	2,013	2,329
Performing, Accruing 60-89 Days Past Due	130	669
Nonperforming, Accruing 90 Days + Past Due	65	21
Nonperforming, Non Accrual	6,763	6,967
Total loans, gross	344,680	339,151
Residential first mortgages [Member]
Performing, Accruing Loans Not Past Due	93,213	95,001
Performing, Accruing 30-59 Days Past Due	1,403	1,272
Performing, Accruing 60-89 Days Past Due	10	440
Nonperforming, Accruing 90 Days + Past Due	65	0
Nonperforming, Non Accrual	491	533
Total loans, gross	95,182	97,246
Home equity and lines of credit [Member]
Performing, Accruing Loans Not Past Due	84,747	84,592
Performing, Accruing 30-59 Days Past Due	540	669
Performing, Accruing 60-89 Days Past Due	117	157
Nonperforming, Accruing 90 Days + Past Due	0	0
Nonperforming, Non Accrual	142	197
Total loans, gross	85,546	85,615
Commercial real estate [Member]
Performing, Accruing Loans Not Past Due	98,205	94,485
Performing, Accruing 30-59 Days Past Due	21	50
Performing, Accruing 60-89 Days Past Due	0	49
Nonperforming, Accruing 90 Days + Past Due	0	21
Nonperforming, Non Accrual	4,160	4,218
Total loans, gross	102,386	98,823
Commercial business [Member]
Performing, Accruing Loans Not Past Due	50,121	44,915
Performing, Accruing 30-59 Days Past Due	34	297
Performing, Accruing 60-89 Days Past Due	0	0
Nonperforming, Accruing 90 Days + Past Due	0	0
Nonperforming, Non Accrual	364	369
Total loans, gross	50,519	45,581
Consumer [Member]
Performing, Accruing Loans Not Past Due	9,423	10,172
Performing, Accruing 30-59 Days Past Due	15	41
Performing, Accruing 60-89 Days Past Due	3	23
Nonperforming, Accruing 90 Days + Past Due	0	0
Nonperforming, Non Accrual	1,606	1,650
Total loans, gross	$ 11,047	$ 11,886