Loan Quality (Impaired Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 29,171		$ 29,171		$ 35,593
Unpaid Principal Balance With No Allowance	32,747		32,747		39,510
Recorded Investment With Allowance	8,821		8,821		3,771
Unpaid Principal Balance With Allowance	9,737		9,737		4,419
Related Allowance	2,572		2,572		847
Average Recorded Investment	36,827	34,134	38,160	34,126
Interest Income Recognized	104	81	147	218
First Liens
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	1,601		1,601		3,504
Unpaid Principal Balance With No Allowance	1,665		1,665		3,715
Recorded Investment With Allowance	1,816		1,816		80
Unpaid Principal Balance With Allowance	1,816		1,816		80
Related Allowance	461		461		20
Average Recorded Investment	3,439	4,283	3,533	4,442
Interest Income Recognized	4	8	8	52
Residential Real Estate Junior Liens & Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	642		642		691
Unpaid Principal Balance With No Allowance	665		665		707
Average Recorded Investment	679	722	711	770
Interest Income Recognized	4	1	5	1
Residential Real Estate 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	2,243		2,243		4,195
Unpaid Principal Balance With No Allowance	2,330		2,330		4,422
Recorded Investment With Allowance	1,816		1,816		80
Unpaid Principal Balance With Allowance	1,816		1,816		80
Related Allowance	461		461		20
Average Recorded Investment	4,118	5,005	4,244	5,212
Interest Income Recognized	8	9	13	53
Residential Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	546		546		557
Unpaid Principal Balance With No Allowance	561		561		567
Average Recorded Investment	550	692	553	350
Commercial, Industrial And Agricultural Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	25,998		25,998		28,346
Unpaid Principal Balance With No Allowance	29,463		29,463		31,937
Recorded Investment With Allowance	4,966		4,966		2,603
Unpaid Principal Balance With Allowance	5,855		5,855		3,194
Related Allowance	1,028		1,028		357
Average Recorded Investment	29,705	24,218	29,896	24,297
Interest Income Recognized	96	36	134	93
Commercial, Industrial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	384		384		2,495
Unpaid Principal Balance With No Allowance	393		393		2,584
Recorded Investment With Allowance	2,039		2,039		1,088
Unpaid Principal Balance With Allowance	2,066		2,066		1,145
Related Allowance	1,083		1,083		470
Average Recorded Investment	2,454	4,219	3,467	4,267
Interest Income Recognized		36		72
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance
Unpaid Principal Balance With No Allowance
Recorded Investment With Allowance
Unpaid Principal Balance With Allowance
Related Allowance
Average Recorded Investment
Interest Income Recognized