Loans Receivable and Related Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Beginning Balance	$ 5,350	$ 3,536
Charge-offs	(37)	(112)
Recoveries	32	105
Provision	143	113
Balance at the end of the year	5,488	3,642
Ending ALL balance attributable to loans:
Individually evaluated for impairment	1,370		1,448
Collectively evaluated for impairment	4,118		3,902
Total loans:
Individually evaluated for impairment	6,421		6,592
Collectively evaluated for impairment	338,259		332,559
Residential Mortgages [Member]
Beginning Balance	828	832
Charge-offs	(5)	(50)
Recoveries	1	76
Provision	(17)	(2)
Balance at the end of the year	807	856
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	807		828
Total loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	95,182		97,246
Home Equity and Lines of Credit [Member]
Beginning Balance	730	320
Charge-offs	0	(26)
Recoveries	0	7
Provision	(3)	112
Balance at the end of the year	727	413
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	727		730
Total loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	85,546		85,615
Commercial Real Estate [Member]
Beginning Balance	3,090	1,737
Charge-offs	0	0
Recoveries	2	0
Provision	97	(14)
Balance at the end of the year	3,189	1,723
Ending ALL balance attributable to loans:
Individually evaluated for impairment	1,370		1,448
Collectively evaluated for impairment	1,819		1,642
Total loans:
Individually evaluated for impairment	4,468		4,573
Collectively evaluated for impairment	97,918		94,250
Commercial Business [Member]
Beginning Balance	636	590
Charge-offs	0	0
Recoveries	0	17
Provision	66	(21)
Balance at the end of the year	702	586
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	702		636
Total loans:
Individually evaluated for impairment	364		369
Collectively evaluated for impairment	50,155		45,212
Consumer [Member]
Beginning Balance	66	57
Charge-offs	(32)	(36)
Recoveries	29	5
Provision	0	38
Balance at the end of the year	63	64
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	63		66
Total loans:
Individually evaluated for impairment	1,589		1,650
Collectively evaluated for impairment	$ 9,458		$ 10,236