Loans and the Allowance for Loan Losses, Activity In Period (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	$ 7,324	$ 8,498
Charges-offs	(418)	(3,969)
Recoveries	153	395
Provision for loan losses	200	2,400
Ending balance	7,259	7,324
Ending balances individually evaluated for impairment	1,213	444
Ending balances collectively evaluated for impairment	6,046	6,880
Ending balance	7,259	7,324
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	20,511	17,568
Ending balance collectively evaluated for impairment	436,999	453,565
Ending balance	457,510	471,133
Commercial [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	677	1,011
Charges-offs	(106)	(138)
Recoveries	29	67
Provision for loan losses	579	(263)
Ending balance	1,179	677
Ending balances individually evaluated for impairment	0	33
Ending balances collectively evaluated for impairment	1,179	644
Ending balance	1,179	677
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	21	97
Ending balance collectively evaluated for impairment	27,443	25,244
Ending balance	27,464	25,341
Real Estate - Construction [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	187	323
Charges-offs	(64)	(831)
Recoveries	3	30
Provision for loan losses	47	665
Ending balance	173	187
Ending balances individually evaluated for impairment	0	0
Ending balances collectively evaluated for impairment	173	187
Ending balance	173	187
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	2,880	3,064
Ending balance collectively evaluated for impairment	9,073	8,941
Ending balance	11,953	12,005
Real Estate - Mortgage [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	6,179	6,735
Charges-offs	(169)	(2,554)
Recoveries	84	162
Provision for loan losses	(393)	1,836
Ending balance	5,701	6,179
Ending balances individually evaluated for impairment	1,213	411
Ending balances collectively evaluated for impairment	4,488	5,768
Ending balance	5,701	6,179
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	17,590	14,390
Ending balance collectively evaluated for impairment	376,278	384,132
Ending balance	393,868	398,522
Consumer [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	204	300
Charges-offs	(31)	(259)
Recoveries	21	70
Provision for loan losses	(14)	93
Ending balance	180	204
Ending balances individually evaluated for impairment	0	0
Ending balances collectively evaluated for impairment	180	204
Ending balance	180	204
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	20	17
Ending balance collectively evaluated for impairment	11,935	13,129
Ending balance	11,955	13,146
Other [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	77	129
Charges-offs	(48)	(187)
Recoveries	16	66
Provision for loan losses	(19)	69
Ending balance	26	77
Ending balances individually evaluated for impairment	0	0
Ending balances collectively evaluated for impairment	26	77
Ending balance	26	77
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	0	0
Ending balance collectively evaluated for impairment	12,270	22,119
Ending balance	$ 12,270	$ 22,119

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A valuation allowance for financing receivables that are expected to be uncollectible.

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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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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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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