Loans and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Loan Losses [Roll Forward]
Beginning balance	$ 6,728	$ 6,307	$ 5,482
Charge-offs	(6,309)	(1,728)	(1,345)
Recoveries	32	216	95
Provision	5,807	1,933	2,075
Ending balance	6,258	6,728	6,307
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	1,009	680
Ending balances collectively evaluated for impairment	5,249	6,048
Loans receivable, individually evaluated for impairment	17,065	9,375
Loans receivable, collectively evaluated for impairment	434,301	449,439
Loans receivable, ending balance	451,366	458,814
Impaired loans for which an allowance has been provided			979
Impaired loans for which no allowance has been provided			446
Total impaired loans	19,976	9,375	1,425
Allowance provided for impaired loans, included in the allowance for loan losses	1,009	680	791
Average balance in impaired loans	19,710	9,598	1,508
Commercial and Industrial [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	795	793
Charge-offs	(526)	(599)
Recoveries	7	12
Provision	656	589
Ending balance	932	795
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	428	435
Ending balances collectively evaluated for impairment	504	360
Loans receivable, individually evaluated for impairment	674	1,030
Loans receivable, collectively evaluated for impairment	26,466	28,031
Loans receivable, ending balance	27,140	29,061
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	2,899	2,321
Charge-offs	(5,004)	0
Recoveries	9	161
Provision	3,781	417
Ending balance	1,685	2,899
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	0	0
Ending balances collectively evaluated for impairment	1,685	2,899
Loans receivable, individually evaluated for impairment	9,612	4,456
Loans receivable, collectively evaluated for impairment	183,393	196,964
Loans receivable, ending balance	193,005	201,420
Construction and Land [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	195	150
Charge-offs	0	0
Recoveries	0	0
Provision	207	45
Ending balance	402	195
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	293	0
Ending balances collectively evaluated for impairment	109	195
Loans receivable, individually evaluated for impairment	4,175	0
Loans receivable, collectively evaluated for impairment	35,870	38,112
Loans receivable, ending balance	40,045	38,112
Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	31	314
Charge-offs	(117)	(60)
Recoveries	14	40
Provision	112	(263)
Ending balance	40	31
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	0	0
Ending balances collectively evaluated for impairment	40	31
Loans receivable, individually evaluated for impairment	4	0
Loans receivable, collectively evaluated for impairment	9,557	5,451
Loans receivable, ending balance	9,561	5,451
Residential Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,584	1,623
Charge-offs	(126)	(597)
Recoveries	2	0
Provision	231	558
Ending balance	1,691	1,584
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	176	208
Ending balances collectively evaluated for impairment	1,515	1,376
Loans receivable, individually evaluated for impairment	2,372	3,324
Loans receivable, collectively evaluated for impairment	134,218	135,722
Loans receivable, ending balance	136,590	139,046
Home Equity Line of Credit [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	698	1,106
Charge-offs	(536)	(472)
Recoveries	0	3
Provision	1,174	61
Ending balance	1,336	698
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	112	37
Ending balances collectively evaluated for impairment	1,224	660
Loans receivable, individually evaluated for impairment	228	565
Loans receivable, collectively evaluated for impairment	44,797	45,159
Loans receivable, ending balance	45,025	45,724
Unallocated [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	526	0
Charge-offs		0
Recoveries		0
Provision	(354)	526
Ending balance	172	526
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment		0
Ending balances collectively evaluated for impairment	$ 172	$ 526

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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