Loans And Leases (Age Analysis Of Past Due Financing Receivables) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Commercial [Member] | Financing Receivables That Are Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 5,784	$ 12,808
60-89 Days Past Due	5,775	5,190
Greater than 90 Days	1,090	947
Total Past Due	12,649	18,945
Current	1,783,594	1,777,563
Total Financing Receivables, Accruing	1,796,243	1,796,507
Consumer [Member] | Financing Receivables That Are Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	4,748	6,385
60-89 Days Past Due	1,307	828
Greater than 90 Days	1,701	2,455
Total Past Due	7,756	9,668
Current	691,048	593,415
Total Financing Receivables, Accruing	698,804	603,083
Leases [Member] | Financing Receivables That Are Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,102	5,274
60-89 Days Past Due	1,106	3,126
Greater than 90 Days	673	750
Total Past Due	3,882	9,150
Current	673,288	659,536
Total Financing Receivables, Accruing	677,170	668,686
Financing Receivables That Are Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	24,529	57,723
60-89 Days Past Due	14,968	27,296
Greater than 90 Days	13,034	20,588
Total Past Due	52,532	105,607
Current	9,490,038	9,330,696
Total Financing Receivables, Accruing	9,542,570	9,436,302
Financing Receivables That Are Accruing [Member] | Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	113	2,466
60-89 Days Past Due	0	2,845
Greater than 90 Days	900	751
Total Past Due	1,013	6,062
Current	733,234	813,382
Total Financing Receivables, Accruing	734,247	819,444
Financing Receivables That Are Accruing [Member] | Real Estate Secured - Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	7,664	18,466
60-89 Days Past Due	5,867	6,923
Greater than 90 Days	7,577	12,724
Total Past Due	21,108	38,113
Current	2,666,588	2,577,605
Total Financing Receivables, Accruing	2,687,696	2,615,719
Financing Receivables That Are Accruing [Member] | Real Estate Secured - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	4,118	12,324
60-89 Days Past Due	913	8,384
Greater than 90 Days	1,093	2,961
Total Past Due	6,124	23,669
Current	2,942,286	2,909,195
Total Financing Receivables, Accruing	2,948,410	2,932,863
Commercial [Member] | Financing Receivables That Are Nonaccruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	374
60-89 Days Past Due	1,106
Greater than 90 Days	7,081
Total Past Due	8,561
Current	5,860
Total Financing Receivables, Nonaccruing	14,421
Consumer [Member] | Financing Receivables That Are Nonaccruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		0
60-89 Days Past Due		0
Greater than 90 Days		0
Total Past Due		0
Current		1
Total Financing Receivables, Nonaccruing		1
Leases [Member] | Financing Receivables That Are Nonaccruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	102	178
Greater than 90 Days	501	1,461
Total Past Due	604	1,639
Current	972	1,178
Total Financing Receivables, Nonaccruing	1,576	2,817
Financing Receivables That Are Nonaccruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	4,947	14,818
60-89 Days Past Due	2,198	8,337
Greater than 90 Days	111,887	136,531
Total Past Due	119,033	159,685
Current	41,066	37,210
Total Financing Receivables, Nonaccruing	160,099	196,895
Financing Receivables That Are Nonaccruing [Member] | Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	2,418
60-89 Days Past Due	0	2,513
Greater than 90 Days	36,994	45,417
Total Past Due	36,994	50,348
Current	493	7,431
Total Financing Receivables, Nonaccruing	37,487	57,779
Financing Receivables That Are Nonaccruing [Member] | Real Estate Secured - Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	684	2,196
60-89 Days Past Due	580	615
Greater than 90 Days	27,472	36,479
Total Past Due	28,737	39,290
Current	12,501	11,683
Total Financing Receivables, Nonaccruing	41,238	50,973
Financing Receivables That Are Nonaccruing [Member] | Real Estate Secured - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,889	8,812
60-89 Days Past Due	410	4,666
Greater than 90 Days	39,839	38,947
Total Past Due	44,137	52,425
Current	21,240	12,888
Total Financing Receivables, Nonaccruing	65,377	65,313
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		1,392
60-89 Days Past Due		365
Greater than 90 Days		14,227
Total Past Due		15,983
Current		4,029
Total Financing Receivables, Nonaccruing		$ 20,012