Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 783,369	$ 794,671
Interest income, including accretion, on loans	3,400
Accretion income included in interest income	1,100
Loan pay offs and renewals amount included in interest income	88
Outstanding principal balance and the carrying amount of loan acquired [Abstract]
Outstanding principal balance	110,702	134,099
Carrying amount	102,133	124,828
Outstanding principal balance and the carrying amount of loan acquired, impaired [Abstract]
Outstanding principal balance	19,958	21,014
Carrying amount	15,909	16,644
Changes in the accretable discount on acquired loans [Abstract]
Balance, beginning of period	2,046
Accretion	(440)
Reclassification from nonaccretable difference	236
Balance, end of period	1,842
Accretion reflected	88
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	119,042	122,553
Commercial real estate, portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	398,820	406,438
Commercial real estate, portfolio [Member] | Construction and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	40,458	41,822
Commercial real estate, portfolio [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	358,362	364,616
Residential real estate, portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	259,598	259,714
Residential real estate, portfolio [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	170,517	171,917
Residential real estate, portfolio [Member] | Home equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	89,081	87,797
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 5,909	$ 5,966