Loans and Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 2,620		$ 4,157
Collectively evaluated for impairment	3,647		4,007
Total ending allowance balance	6,267	7,083	8,164	9,119	8,928	11,224
Loans:
Loans individually evaluated for impairment	20,227		30,091
Loans collectively evaluated for impairment	176,435		175,676
Total loans	196,662		205,767
Accrued interest receivable	611		667
Total recorded investments in loans	197,273		206,434
Commercial [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	131		714
Collectively evaluated for impairment	414		177
Total ending allowance balance	545		891
Loans:
Loans individually evaluated for impairment	1,467		3,823
Loans collectively evaluated for impairment	37,432		30,133
Total loans	38,899		33,956
Accrued interest receivable	138		143
Total recorded investments in loans	39,037		34,099
Commercial real estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	2,250		2,907
Collectively evaluated for impairment	2,055		2,852
Total ending allowance balance	4,305		5,759
Loans:
Loans individually evaluated for impairment	17,217		24,797
Loans collectively evaluated for impairment	88,498		94,187
Total loans	105,715		118,984
Accrued interest receivable	296		341
Total recorded investments in loans	106,011		119,325
Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	130		201
Collectively evaluated for impairment	330		275
Total ending allowance balance	460		476
Loans:
Loans individually evaluated for impairment	1,141		844
Loans collectively evaluated for impairment	27,604		25,985
Total loans	28,745		26,829
Accrued interest receivable	88		75
Total recorded investments in loans	28,833		26,904
Installment Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	39		60
Collectively evaluated for impairment	96		155
Total ending allowance balance	135		215
Loans:
Loans individually evaluated for impairment	57		133
Loans collectively evaluated for impairment	5,091		6,270
Total loans	5,148		6,403
Accrued interest receivable	17		47
Total recorded investments in loans	5,165		6,450
Home Equity [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	70		275
Collectively evaluated for impairment	212		207
Total ending allowance balance	282		482
Loans:
Loans individually evaluated for impairment	345		494
Loans collectively evaluated for impairment	17,810		19,101
Total loans	18,155		19,595
Accrued interest receivable	72		61
Total recorded investments in loans	18,227		19,656
Unallocated [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	540		341
Total ending allowance balance	540		341
Loans:
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	0		0
Total loans	0		0
Accrued interest receivable	0		0
Total recorded investments in loans	$ 0		$ 0