Finance Receivables And Allowance For Credit Losses (Schedule Of Recorded Investment In Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	$ 11,395	$ 11,192
Allowance for loan losses, Ending balance: collectively evaluated for impairment	33,271	43,300
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	5,758	2,625
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	4,336	943
Total allowance for credit losses	54,760	58,060
Loans and leases outstanding, Ending balance: individually evaluated for impairment	63,262	75,063
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	4,146,949	4,042,599
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	16,088	23,181
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	489,331	626,360
Total loans and leases outstanding	4,715,630	4,767,203
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	6,546	7,015
Allowance for loan losses, Ending balance: collectively evaluated for impairment	10,495	12,816
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	453	128
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	356	5
Total allowance for credit losses	17,850	19,964
Loans and leases outstanding, Ending balance: individually evaluated for impairment	28,840	31,838
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	1,176,229	1,183,675
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	463	1,141
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	75,925	124,755
Total loans and leases outstanding	1,281,457	1,341,409
Commercial Real Estate Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	4,841	4,177
Allowance for loan losses, Ending balance: collectively evaluated for impairment	16,476	21,397
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	4,250	1,288
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	3,054	131
Total allowance for credit losses	28,621	26,993
Loans and leases outstanding, Ending balance: individually evaluated for impairment	34,422	43,225
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	992,534	1,002,105
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	15,625	22,040
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	261,720	325,934
Total loans and leases outstanding	1,304,301	1,393,304
Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	5	0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	3,597	6,335
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	224	445
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	856	174
Total allowance for credit losses	4,682	6,954
Loans and leases outstanding, Ending balance: individually evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	855,386	861,361
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	111,285	128,700
Total loans and leases outstanding	966,671	990,061
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	3	0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	2,703	2,752
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	831	764
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	70	633
Total allowance for credit losses	3,607	4,149
Loans and leases outstanding, Ending balance: individually evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	1,122,800	995,458
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	40,401	46,971
Total loans and leases outstanding	1,163,201	1,042,429
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	0	0
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	0	0
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	0	0
Total allowance for credit losses	0	0
Loans and leases outstanding, Ending balance: individually evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	0	0
Total loans and leases outstanding	$ 0	$ 0