Credit Quality (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Impaired Loans
Recorded Investment	$ 26,566	$ 26,566	$ 27,354
Unpaid Principal Balance	31,295	31,295	31,691
Related Allowance	3,265	3,265	3,740
Average Recorded Investment	26,382	26,502	35,797
Interest Income Recognized	369	681	1,394
Consumer and Credit Card [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Commercial and Industrial [Member]
Impaired Loans
Recorded Investment	5,586	5,586	5,471
Unpaid Principal Balance	7,306	7,306	5,685
Related Allowance	733	733	340
Average Recorded Investment	5,626	5,489	9,765
Interest Income Recognized	125	184	333
Commercial Real Estate [Member]
Impaired Loans
Recorded Investment	20,980	20,980	21,883
Unpaid Principal Balance	23,989	23,989	26,006
Related Allowance	2,532	2,532	3,400
Average Recorded Investment	20,756	21,013	26,032
Interest Income Recognized	244	497	1,061
Residential RE and Home Equity [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
With No Related Allowance Recorded [Member] | Consumer and Credit Card [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
With No Related Allowance Recorded [Member] | Commercial and Industrial [Member]
Impaired Loans
Recorded Investment	3,050	3,050	4,288
Unpaid Principal Balance	3,127	3,127	4,437
Related Allowance	0	0	0
Average Recorded Investment	3,233	3,532	3,557
Interest Income Recognized	40	73	268
With No Related Allowance Recorded [Member] | Commercial Real Estate [Member]
Impaired Loans
Recorded Investment	11,068	11,068	5,507
Unpaid Principal Balance	13,152	13,152	5,998
Related Allowance	0	0	0
Average Recorded Investment	9,751	9,221	10,067
Interest Income Recognized	166	333	241
With No Related Allowance Recorded [Member] | Residential RE and Home Equity [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized		0	0
With Allowance Recorded [Member] | Consumer and Credit Card [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
With Allowance Recorded [Member] | Commercial and Industrial [Member]
Impaired Loans
Recorded Investment	2,536	2,536	1,183
Unpaid Principal Balance	4,179	4,179	1,248
Related Allowance	733	733	340
Average Recorded Investment	2,393	1,957	6,208
Interest Income Recognized	85	111	65
With Allowance Recorded [Member] | Commercial Real Estate [Member]
Impaired Loans
Recorded Investment	9,912	9,912	16,376
Unpaid Principal Balance	10,837	10,837	20,008
Related Allowance	2,532	2,532	3,400
Average Recorded Investment	11,005	11,792	15,965
Interest Income Recognized	78	164	820
With Allowance Recorded [Member] | Residential RE and Home Equity [Member]
Impaired Loans
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	$ 0	$ 0	$ 0