Loans and the Allowance for Loan Losses (Summary of Activity in Allowance for Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Beginning Balance				$ 10,237				$ 9,602	$ 10,237	$ 9,602	$ 8,867
charged-off									(329)	(527)	(2,028)
Recoveries									75	837	315
Provision for loan losses	350	0	0	0	100	225	(107)	107	350	325	2,448
Ending Balance	10,333				10,237				10,333	10,237	9,602
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				2,419				1,527	2,419	1,527
charged-off									(6)	0
Recoveries									41	0
Provision for loan losses									(761)	892
Ending Balance	1,698				2,419				1,698	2,419
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				5,212				5,972	5,212	5,972
charged-off									(126)	(57)
Recoveries									28	80
Provision for loan losses									521	(783)
Ending Balance	5,746				5,212				5,746	5,212
Construction [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				313				707	313	707
charged-off									0	0
Recoveries									0	540
Provision for loan losses									49	(934)
Ending Balance	362				313				362	313
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				1,528				1,263	1,528	1,263
charged-off									(175)	(454)
Recoveries									0	210
Provision for loan losses									(367)	509
Ending Balance	990				1,528				990	1,528
Installment [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				114				51	114	51
charged-off									(22)	(16)
Recoveries									6	7
Provision for loan losses									49	72
Ending Balance	146				114				146	114
Unallocated [Member]
Financing Receivable, Impaired [Line Items]
Beginning Balance				651				82	651	82
charged-off									0	0
Recoveries									0	0
Provision for loan losses									859	569
Ending Balance	$ 1,391				$ 651				$ 1,391	$ 651