Loans (Details 9) (USD $)	3 Months Ended			12 Months Ended	3 Months Ended													3 Months Ended			1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended		3 Months Ended			1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2014 Item	Dec. 31, 2013 Item	Mar. 31, 2013 Item	Dec. 31, 2013	Mar. 31, 2014 Minimum	Mar. 31, 2014 Maximum	Mar. 31, 2014 Balance Item	Dec. 31, 2013 Balance Item	Mar. 31, 2013 Balance Item	Mar. 31, 2014 Term/Maturity Item	Dec. 31, 2013 Term/Maturity Item	Mar. 31, 2013 Term/Maturity Item	Mar. 31, 2014 Interest Rate Item	Mar. 31, 2014 Non-Accrual Loans	Dec. 31, 2013 Non-Accrual Loans	Mar. 31, 2014 Performing TDRs	Dec. 31, 2013 Performing TDRs	Mar. 31, 2014 Real Estate Secured Item	Dec. 31, 2013 Real Estate Secured Item	Mar. 31, 2013 Real Estate Secured Item	Mar. 31, 2014 Real Estate Secured Balance Item	Dec. 31, 2013 Real Estate Secured Balance Item	Mar. 31, 2013 Real Estate Secured Balance Item	Mar. 31, 2014 Real Estate Secured Term/Maturity Item	Dec. 31, 2013 Real Estate Secured Term/Maturity Item	Mar. 31, 2013 Real Estate Secured Term/Maturity Item	Mar. 31, 2014 Real Estate Secured Interest Rate Item	Dec. 31, 2013 Real Estate Secured Interest Rate	Mar. 31, 2014 Commercial & Industrial Item	Dec. 31, 2013 Commercial & Industrial Item	Mar. 31, 2013 Commercial & Industrial Item	Mar. 31, 2014 Commercial & Industrial Balance Item	Dec. 31, 2013 Commercial & Industrial Balance Item	Mar. 31, 2013 Commercial & Industrial Balance Item	Mar. 31, 2014 Commercial & Industrial Term/Maturity Item	Dec. 31, 2013 Commercial & Industrial Term/Maturity Item	Mar. 31, 2013 Commercial & Industrial Term/Maturity Item	Mar. 31, 2014 Commercial & Industrial Interest Rate	Dec. 31, 2013 Commercial & Industrial Interest Rate
Troubled debt restructurings
Total TDRs	$ 40,128,000	$ 36,220,000	$ 30,867,000	$ 36,220,000			$ 17,148,000	$ 17,852,000		$ 10,735,000	$ 10,353,000		$ 12,245,000	$ 10,800,000	$ 8,200,000	$ 29,300,000	$ 28,000,000	$ 34,565,000	$ 30,008,000		$ 15,462,000	$ 15,640,000		$ 9,150,000	$ 8,708,000		$ 9,953,000	$ 5,660,000	$ 5,563,000	$ 6,212,000		$ 1,686,000	$ 2,212,000		$ 1,585,000	$ 1,645,000		$ 2,292,000	$ 2,355,000
Delinquent period of TDRs to be considered as non-performing					90 days
SBA guaranteed portion of total recorded investment of TDR loans	2,900,000	2,800,000		2,800,000
Roll-forward of TDR loans
Balance at Beginning of Period	36,220,000	29,472,000	35,733,000	35,733,000			17,852,000			10,353,000			8,015,000	10,800,000	8,200,000	29,300,000	28,000,000	30,008,000										5,660,000	6,212,000									2,292,000	2,355,000
New TDR Loans Added	5,010,000		717,000	8,212,000
TDR Loans Paid Off			(2,016,000)	(463,000)
Reductions Due to Charge-Offs	(438,000)		(3,202,000)	(412,000)
Other Changes (Payments, Amortization, & Other)	(664,000)		(365,000)	(589,000)
Balance at End of Period	40,128,000	36,220,000	30,867,000	36,220,000			17,148,000	17,852,000		10,735,000	10,353,000		12,245,000	10,800,000	8,200,000	29,300,000	28,000,000	34,565,000	30,008,000		15,462,000	15,640,000		9,150,000	8,708,000		9,953,000	5,660,000	5,563,000	6,212,000		1,686,000	2,212,000		1,585,000	1,645,000		2,292,000	2,355,000
Pre-modification and post-modification balances and types of concession given for newly modified TDR loans
Pre-Modification Balance:	5,017,000	10,580,000	749,000				41,000	9,274,000	295,000	641,000	1,306,000	454,000	4,335,000					4,871,000	9,781,000	621,000		9,090,000	267,000	536,000	691,000	354,000	4,335,000		146,000	799,000	128,000	41,000	184,000	28,000	105,000	615,000	100,000
Post-Modification Balance:	5,010,000	8,212,000	717,000				41,000	7,025,000	265,000	634,000	1,187,000	452,000	4,335,000					4,868,000	7,548,000	617,000		6,868,000	265,000	533,000	680,000	352,000	4,335,000		142,000	664,000	100,000	41,000	157,000		101,000	507,000	100,000
Number of Loans	8	19	6				2	16	3	2	3	3	1					3	14	2		13	1	2	1	1	1		5	5	4	2	3	2	3	2	2
Period of interest only payment concessions					3 months	6 months
TDR loans modified during the past 12 months that had a payment default during current period
Pre-Modification Balance:	420,000	878,000	256,000				420,000	504,000	256,000		374,000							417,000	801,000	158,000	417,000	427,000	158,000		374,000				3,000	77,000	98,000	3,000	77,000	98,000
Post-Modification Balance:	$ 417,000	$ 630,000	$ 184,000				$ 417,000	$ 296,000	$ 184,000		$ 334,000							$ 414,000	$ 575,000	$ 126,000	$ 414,000	$ 241,000	$ 126,000		$ 334,000				$ 3,000	$ 55,000	$ 58,000	$ 3,000	$ 55,000	$ 58,000
Number of loans	2	3	5				2	2	5		1							1	2	2	1	1	2		1				1	1	3	1	1	3