Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Activity in the allowance for loan losses:
ALL balance at the beginning of period	$ 4,639	$ 3,173	$ 4,076	$ 3,045
Charge-offs	(483)	(382)	(985)	(931)
Recoveries	5	14	70	16
Provision	667	675	1,667	1,350
ALL balance at the end of period	4,828	3,480	4,828	3,480
Individually evaluated for impairment	1,301	723	1,301	723
Collectively evaluated for impairment	3,527	2,757	3,527	2,757
Commercial
Activity in the allowance for loan losses:
ALL balance at the beginning of period	3,645	2,246	3,107	2,164
Charge-offs	(472)	(372)	(972)	(916)
Recoveries	3	2	25	2
Provision	564	677	1,580	1,303
ALL balance at the end of period	3,740	2,553	3,740	2,553
Individually evaluated for impairment	1,094	683	1,094	683
Collectively evaluated for impairment	2,646	1,870	2,646	1,870
Residential Real Estate
Activity in the allowance for loan losses:
ALL balance at the beginning of period	490	396	514	366
Charge-offs			(2)
Recoveries			36
Provision		23	(58)	53
ALL balance at the end of period	490	419	490	419
Individually evaluated for impairment	195	16	195	16
Collectively evaluated for impairment	295	403	295	403
Home Equity
Activity in the allowance for loan losses:
ALL balance at the beginning of period	271	246	242	249
Charge-offs		(9)		(9)
Recoveries	1	1	8	2
Provision	79	3	101	(1)
ALL balance at the end of period	351	241	351	241
Individually evaluated for impairment
Collectively evaluated for impairment	351	241	351	241
Installment
Activity in the allowance for loan losses:
ALL balance at the beginning of period	216	273	200	255
Charge-offs		(1)		(6)
Recoveries	1	11	1	12
Provision	14	(36)	30	(14)
ALL balance at the end of period	231	247	231	247
Individually evaluated for impairment	12	24	12	24
Collectively evaluated for impairment	219	223	219	223
Credit Card
Activity in the allowance for loan losses:
ALL balance at the beginning of period	17	12	13	11
Charge-offs	(11)		(11)
Recoveries
Provision	10	8	14	9
ALL balance at the end of period	16	20	16	20
Individually evaluated for impairment
Collectively evaluated for impairment	$ 16	$ 20	$ 16	$ 20

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

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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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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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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