Loans Receivable (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Consumer Home Equity [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Interest Income Recognized	$ 10
Commercial business loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Interest Income Recognized		10
Commercial Real Estate [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	13,513		13,513		14,023
Unpaid Principal Balance	13,784		13,784		14,129
Related Allowance	1,169		1,169		1,489
Average Recorded Investment	13,699	6,734	13,841	8,501
Interest Income Recognized	163	426	489	426
Consumer [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	291		291		153
Unpaid Principal Balance	291		291		153
Related Allowance	48		48		50
Average Recorded Investment	243	154	196	155
Interest Income Recognized	11	7	16	7
Commercial [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	38		38		63
Unpaid Principal Balance	38		38		63
Related Allowance	3		3		10
Average Recorded Investment	37	188	41	228
Interest Income Recognized	2	13	2	13
Residential [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	1,361		1,361		1,364
Unpaid Principal Balance	1,361		1,361		1,364
Related Allowance
Average Recorded Investment	1,361		1,362
Interest Income Recognized	2		7
Residential Construction Loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	944		944
Unpaid Principal Balance	944		944
Related Allowance
Average Recorded Investment	102		421	1,432
Interest Income Recognized	10		32
With an allowance recorded [Member] | Consumer Home Equity [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	152		152		153
Unpaid Principal Balance	152		152		153
Related Allowance	48		48		50
Average Recorded Investment	152	154	153	155
Interest Income Recognized	1	7	6	7
With an allowance recorded [Member] | Commercial business loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	38		38		25
Unpaid Principal Balance	38		38		25
Related Allowance	3		3		10
Average Recorded Investment	37	25	41	151
Interest Income Recognized	2	3	2	3
With an allowance recorded [Member] | Commercial Real Estate [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	8,100		8,100		8,454
Unpaid Principal Balance	8,264		8,264		8,454
Related Allowance	1,169		1,169		1,489
Average Recorded Investment	8,248	5,678	8,353	7,363
Interest Income Recognized	105	408	319	408
With an allowance recorded [Member] | Residential Real Estate, Construction [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Average Recorded Investment				1,432
Interest Income Recognized
With no related allowance recorded [Member] | Consumer Home Equity [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	139		139
Unpaid Principal Balance	139		139
Related Allowance
Average Recorded Investment	91		43
Interest Income Recognized			10
With no related allowance recorded [Member] | Commercial business loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment					39
Unpaid Principal Balance					39
Related Allowance
Average Recorded Investment		163		77
Interest Income Recognized				10
With no related allowance recorded [Member] | Commercial Real Estate [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	5,413		5,413		5,568
Unpaid Principal Balance	5,520		5,520		5,675
Related Allowance
Average Recorded Investment	5,451	1,056	5,488	1,138
Interest Income Recognized	58	18	170	18
With no related allowance recorded [Member] | Residential loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	1,361		1,361		1,364
Unpaid Principal Balance	1,361		1,361		1,364
Related Allowance
Average Recorded Investment	1,361		1,362
Interest Income Recognized	2		7
With no related allowance recorded [Member] | Residential Construction Loans [Member]
Recorded investment and unpaid principal balances for impaired loans receivable
Recorded Investment	944		944
Unpaid Principal Balance	944		944
Related Allowance
Average Recorded Investment	102		421
Interest Income Recognized	$ 10		$ 32