Loans and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Dec. 31, 2012
Allowance for Loan Losses [Roll Forward]
Beginning balance	$ 6,258	$ 6,728
Charge-offs	(1,167)	(6,309)
Recoveries	90	32
Provision (recovery)	1,300	5,807
Ending balance	6,481	6,258
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	1,277	1,009
Ending balances collectively evaluated for impairment	5,204	5,249
Loans receivable, individually evaluated for impairment	13,722	17,065
Loans receivable, collectively evaluated for impairment	441,283	434,301
Loans receivable, ending balance	455,005	451,366
Commercial and Industrial [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	932	795
Charge-offs	(257)	(526)
Recoveries	59	7
Provision (recovery)	338	656
Ending balance	1,072	932
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	219	428
Ending balances collectively evaluated for impairment	853	504
Loans receivable, individually evaluated for impairment	481	674
Loans receivable, collectively evaluated for impairment	24,248	26,466
Loans receivable, ending balance	24,729	27,140
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,685	2,899
Charge-offs	(550)	(5,004)
Recoveries	0	9
Provision (recovery)	1,161	3,781
Ending balance	2,296	1,685
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	515	0
Ending balances collectively evaluated for impairment	1,781	1,685
Loans receivable, individually evaluated for impairment	6,868	9,612
Loans receivable, collectively evaluated for impairment	176,434	183,393
Loans receivable, ending balance	183,302	193,005
Construction and Land [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	402	195
Charge-offs	0	0
Recoveries	0	0
Provision (recovery)	40	207
Ending balance	442	402
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	341	293
Ending balances collectively evaluated for impairment	101	109
Loans receivable, individually evaluated for impairment	4,130	4,175
Loans receivable, collectively evaluated for impairment	31,702	35,870
Loans receivable, ending balance	35,832	40,045
Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	40	31
Charge-offs	(104)	(117)
Recoveries	23	14
Provision (recovery)	64	112
Ending balance	23	40
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	23	40
Loans receivable, individually evaluated for impairment	0	4
Loans receivable, collectively evaluated for impairment	3,756	4,563
Loans receivable, ending balance	3,756	4,567
Student US Government Guaranteed [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provision (recovery)	72	0
Ending balance	72	0
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	72	0
Loans receivable, individually evaluated for impairment	0	0
Loans receivable, collectively evaluated for impairment	24,578	4,994
Loans receivable, ending balance	24,578	4,994
Residential Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,691	1,584
Charge-offs	(82)	(126)
Recoveries	2	2
Provision (recovery)	(209)	231
Ending balance	1,402	1,691
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	202	176
Ending balances collectively evaluated for impairment	1,200	1,515
Loans receivable, individually evaluated for impairment	2,145	2,372
Loans receivable, collectively evaluated for impairment	137,411	134,218
Loans receivable, ending balance	139,556	136,590
Unallocated Financing Receivables [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	172	526
Charge-offs	0	0
Recoveries	0	0
Provision (recovery)	109	(354)
Ending balance	281	172
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	281	172
Home Equity Line of Credit [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,336	698
Charge-offs	(174)	(536)
Recoveries		0
Provision (recovery)	(275)	1,174
Ending balance	893	1,336
Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract]
Ending balances individually evaluated for impairment	0	112
Ending balances collectively evaluated for impairment	893	1,224
Loans receivable, individually evaluated for impairment	98	228
Loans receivable, collectively evaluated for impairment	43,154	44,797
Loans receivable, ending balance	$ 43,252	$ 45,025

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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 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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