Loans And Allowance For Loan Losses (Summary Of Impaired Loans, By Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 9,386
Specific Related Allowance	3,688
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	38,086	36,566
Unpaid Principal Balance	44,812	40,899
Specific Related Allowance	2,137	2,482
Average Recorded Investment	37,324	40,307
Interest Income Recognized	176	183
Commercial Real Estate - FL [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	39,021	39,122
Unpaid Principal Balance	64,328	64,357
Specific Related Allowance	3,389	2,389
Average Recorded Investment	39,073	46,189
Interest Income Recognized	33	54
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	8,363	7,816
Unpaid Principal Balance	10,921	8,721
Specific Related Allowance	556	2,276
Average Recorded Investment	8,089	8,213
Interest Income Recognized	10	37
Commercial Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,176	1,084
Unpaid Principal Balance	1,176	1,084
Average Recorded Investment	1,130	1,217
Total Commercial Loans And Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	86,646	84,588
Unpaid Principal Balance	121,237	115,061
Specific Related Allowance	6,082	7,147
Average Recorded Investment	85,616	95,926
Interest Income Recognized	219	274
Direct Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,007	7,162
Unpaid Principal Balance	7,190	7,522
Average Recorded Investment	7,085	7,530
Interest Income Recognized	31	207
Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,138	9,544
Unpaid Principal Balance	10,493	9,839
Average Recorded Investment	9,841	10,278
Interest Income Recognized	80	175
Indirect Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,048	979
Unpaid Principal Balance	1,294	1,071
Average Recorded Investment	1,013	973
Interest Income Recognized	3	24
Consumer Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	735	747
Unpaid Principal Balance	750	761
Average Recorded Investment	741	947
Interest Income Recognized		8
Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,500	3,500
Unpaid Principal Balance	3,500	3,500
Specific Related Allowance
Average Recorded Investment	3,500	1,750
Interest Income Recognized
Purchased Credit-Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	19,207	15,839
Unpaid Principal Balance	23,308	18,743
Average Recorded Investment	15,417	15,326
With No Specific Allowance Recorded [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	33,672	28,163
Unpaid Principal Balance	40,398	32,476
Average Recorded Investment	30,915	31,432
Interest Income Recognized	151	151
With No Specific Allowance Recorded [Member] | Commercial Real Estate - FL [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	14,255	28,721
Unpaid Principal Balance	24,588	46,162
Average Recorded Investment	21,490	29,630
Interest Income Recognized	33	33
With No Specific Allowance Recorded [Member] | Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,705	4,228
Unpaid Principal Balance	10,263	4,971
Average Recorded Investment	5,966	4,610
Interest Income Recognized	7	17
With No Specific Allowance Recorded [Member] | Commercial Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,176	1,084
Unpaid Principal Balance	1,176	1,084
Average Recorded Investment	1,130	1,217
With No Specific Allowance Recorded [Member] | Total Commercial Loans And Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	56,808	62,196
Unpaid Principal Balance	76,425	84,693
Average Recorded Investment	59,501	66,889
Interest Income Recognized	191	201
With No Specific Allowance Recorded [Member] | Direct Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,007	7,162
Unpaid Principal Balance	7,190	7,522
Average Recorded Investment	7,085	7,530
Interest Income Recognized	31	207
With No Specific Allowance Recorded [Member] | Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,138	9,544
Unpaid Principal Balance	10,493	9,839
Average Recorded Investment	9,841	10,278
Interest Income Recognized	80	175
With No Specific Allowance Recorded [Member] | Indirect Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,048	979
Unpaid Principal Balance	1,294	1,071
Average Recorded Investment	1,013	973
Interest Income Recognized	3	24
With No Specific Allowance Recorded [Member] | Consumer Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	735	747
Unpaid Principal Balance	750	761
Average Recorded Investment	741	947
Interest Income Recognized		8
With No Specific Allowance Recorded [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,500	3,500
Unpaid Principal Balance	3,500	3,500
Specific Related Allowance
Average Recorded Investment	3,500	1,750
Interest Income Recognized
With No Specific Allowance Recorded [Member] | Purchased Credit-Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	19,207	15,839
Unpaid Principal Balance	23,308	18,743
Average Recorded Investment	15,417	15,326
With A Specific Allowance Recorded [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,414	8,403
Unpaid Principal Balance	4,414	8,423
Specific Related Allowance	2,137	2,482
Average Recorded Investment	6,409	8,875
Interest Income Recognized	25	32
With A Specific Allowance Recorded [Member] | Commercial Real Estate - FL [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	24,766	10,401
Unpaid Principal Balance	39,740	18,195
Specific Related Allowance	3,389	2,389
Average Recorded Investment	17,583	16,559
Interest Income Recognized		21
With A Specific Allowance Recorded [Member] | Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	658	3,588
Unpaid Principal Balance	658	3,750
Specific Related Allowance	556	2,276
Average Recorded Investment	2,123	3,603
Interest Income Recognized	3	20
With A Specific Allowance Recorded [Member] | Commercial Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Total Commercial Loans And Leases [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	29,838	22,392
Unpaid Principal Balance	44,812	30,368
Specific Related Allowance	6,082	7,147
Average Recorded Investment	26,115	29,037
Interest Income Recognized	28	73
With A Specific Allowance Recorded [Member] | Direct Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Indirect Installment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Consumer Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized
With A Specific Allowance Recorded [Member] | Purchased Credit-Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment
Unpaid Principal Balance
Specific Related Allowance
Average Recorded Investment
Interest Income Recognized