Loan Quality (Impaired Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 28,019		$ 28,019		$ 35,593
Unpaid Principal Balance With No Allowance	31,873		31,873		39,510
Recorded Investment With Allowance	9,387		9,387		3,771
Unpaid Principal Balance With Allowance	10,342		10,342		4,419
Related Allowance	2,862		2,862		847
Average Recorded Investment	38,168	36,942	38,163	35,065
Interest Income Recognized	122	70	269	285
First Liens [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	1,554		1,554		3,504
Unpaid Principal Balance With No Allowance	1,621		1,621		3,715
Recorded Investment With Allowance	1,796		1,796		80
Unpaid Principal Balance With Allowance	1,796		1,796		80
Related Allowance	514		514		20
Average Recorded Investment	3,365	3,791	3,477	4,225
Interest Income Recognized	4	4	12	55
Residential Real Estate Junior Liens & Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	416		416		691
Unpaid Principal Balance With No Allowance	436		436		707
Average Recorded Investment	417	740	613	760
Interest Income Recognized			5	1
Residential Real Estate 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	1,970		1,970		4,195
Unpaid Principal Balance With No Allowance	2,057		2,057		4,422
Recorded Investment With Allowance	1,796		1,796		80
Unpaid Principal Balance With Allowance	1,796		1,796		80
Related Allowance	514		514		20
Average Recorded Investment	3,782	4,531	4,090	4,985
Interest Income Recognized	4	4	17	56
Residential Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	542		542		557
Unpaid Principal Balance With No Allowance	559		559		567
Average Recorded Investment	544	571	550	424
Commercial, Industrial And Agricultural Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	25,418		25,418		28,346
Unpaid Principal Balance With No Allowance	29,168		29,168		31,937
Recorded Investment With Allowance	5,592		5,592		2,603
Unpaid Principal Balance With Allowance	6,494		6,494		3,194
Related Allowance	1,325		1,325		357
Average Recorded Investment	31,730	27,741	30,508	25,445
Interest Income Recognized	118	35	252	125
Commercial, Industrial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	89		89		2,495
Unpaid Principal Balance With No Allowance	89		89		2,584
Recorded Investment With Allowance	1,999		1,999		1,088
Unpaid Principal Balance With Allowance	2,052		2,052		1,145
Related Allowance	1,023		1,023		470
Average Recorded Investment	2,112	4,099	3,015	4,211
Interest Income Recognized		31		104
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