Allowance for Loan Losses and Reserve for Unfunded Lending Commitments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	$ 12,600	$ 12,118
Provision for loan losses	0	294	294
Charge-offs	(73)	(287)	(837)
Recoveries	87	403	1,025
Balance, end of year	12,614	12,528	12,118
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	574			559
Collectively evaluated for impairment	11,581			11,610
Loans acquired with deteriorated credit quality	459			431
Total	12,614	12,528	12,118
Reserve for Unfunded Lending Commitments [Abstract]
Balance, beginning of year	210	201
Provision for loan losses	7	10	9
Charge-offs	0	0	0
Balance, end of year	217	211	201
Loans [Abstract]
Individually evaluated for impairment	7,070			6,029
Collectively evaluated for impairment	760,390			771,998
Loans acquired with deteriorated credit quality	15,909			16,644
Total Loans	783,369			794,671
Commercial [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	1,810
Provision for loan losses	(30)		154
Charge-offs	0		(129)
Recoveries	8		335
Balance, end of year	1,788		1,450
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	0			0
Collectively evaluated for impairment	1,785			1,810
Loans acquired with deteriorated credit quality	3			0
Total	1,788		1,450
Loans [Abstract]
Individually evaluated for impairment	16			19
Collectively evaluated for impairment	118,906			122,424
Loans acquired with deteriorated credit quality	120			110
Total Loans	119,042			122,553
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	6,819
Provision for loan losses	113		(162)
Charge-offs	0		(164)
Recoveries	14		323
Balance, end of year	6,946		6,822
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	571			556
Collectively evaluated for impairment	6,110			6,039
Loans acquired with deteriorated credit quality	265			224
Total	6,946		6,822
Loans [Abstract]
Individually evaluated for impairment	5,689			4,688
Collectively evaluated for impairment	384,693			392,720
Loans acquired with deteriorated credit quality	8,438			9,030
Total Loans	398,820			406,438
Residential Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	3,690
Provision for loan losses	126		177
Charge-offs	(53)		(369)
Recoveries	43		244
Balance, end of year	3,806		3,638
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	0			0
Collectively evaluated for impairment	3,615			3,483
Loans acquired with deteriorated credit quality	191			207
Total	3,806		3,638
Loans [Abstract]
Individually evaluated for impairment	1,345			1,304
Collectively evaluated for impairment	250,902			250,906
Loans acquired with deteriorated credit quality	7,351			7,504
Total Loans	259,598			259,714
Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	99
Provision for loan losses	(27)		(57)
Charge-offs	(20)		(175)
Recoveries	22		123
Balance, end of year	74		208
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	3			3
Collectively evaluated for impairment	71			96
Loans acquired with deteriorated credit quality	0			0
Total	74		208
Loans [Abstract]
Individually evaluated for impairment	20			18
Collectively evaluated for impairment	5,889			5,948
Loans acquired with deteriorated credit quality	0			0
Total Loans	5,909			5,966
Unallocated Financing Receivables [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	182
Provision for loan losses	(182)		182
Charge-offs	0		0
Recoveries	0		0
Balance, end of year	0		0
Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment	0			0
Collectively evaluated for impairment	0			182
Loans acquired with deteriorated credit quality	0			0
Total	0		0
Loans [Abstract]
Individually evaluated for impairment	0			0
Collectively evaluated for impairment	0			0
Loans acquired with deteriorated credit quality	0			0
Total Loans	$ 0			$ 0

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Refers to the total of reserves, for unfunded lending commitments.

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Refers to the amount of reserve for unfunded lending commitments that have been removed, or charged off.

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Refers to the provision for loan losses related to reserve for unfunded lending commitments.

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Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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The balance of financing receivables that were acquired with deteriorated credit quality.

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The valuation allowance for financing receivables acquired with deteriorated credit quality.

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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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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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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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