Finance Receivables And Allowance For Credit Losses (Schedule Of Recorded Investment In Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	$ 7,492	$ 11,192
Allowance for loan losses, Ending balance: collectively evaluated for impairment	31,564	43,300
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	9,991	2,625
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	5,716	943
Total allowance for credit losses	54,763	58,060
Loans and leases outstanding, Ending balance: individually evaluated for impairment	77,237	75,063
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	4,693,586	4,042,599
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	53,438	23,181
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	372,333	626,360
Total loans and leases outstanding	5,196,594	4,767,203
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	4,702	7,015
Allowance for loan losses, Ending balance: collectively evaluated for impairment	9,900	12,816
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	40	128
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	0	5
Total allowance for credit losses	14,642	19,964
Loans and leases outstanding, Ending balance: individually evaluated for impairment	29,980	31,838
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	1,298,433	1,183,675
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	8,407	1,141
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	55,639	124,755
Total loans and leases outstanding	1,392,459	1,341,409
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Ending balance: individually evaluated for impairment	2,790	4,177
Allowance for loan losses, Ending balance: collectively evaluated for impairment	14,643	21,397
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	8,958	1,288
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	4,898	131
Total allowance for credit losses	31,289	26,993
Loans and leases outstanding, Ending balance: individually evaluated for impairment	47,257	43,225
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	1,163,595	1,002,105
Loans and leases outstanding, Ending balance: loans acquired with deteriorated credit quality	45,031	22,040
Loans and leases outstanding, Ending balance: covered loans acquired with deteriorated credit quality	182,826	325,934
Total loans and leases outstanding	1,438,709	1,393,304
Consumer [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	3,384	6,335
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	953	445
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	818	174
Total allowance for credit losses	5,155	6,954
Loans and leases outstanding, Ending balance: individually evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	906,855	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	97,972	128,700
Total loans and leases outstanding	1,004,827	990,061
Residential [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	3,637	2,752
Allowance for loan losses, Ending balance: loans acquired with deteriorated credit quality	40	764
Allowance for loan losses, Ending balance: covered loans acquired with deteriorated credit quality	0	633
Total allowance for credit losses	3,677	4,149
Loans and leases outstanding, Ending balance: individually evaluated for impairment	0	0
Loans and leases outstanding, Ending balance: collectively evaluated for impairment	1,324,703	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	35,896	46,971
Total loans and leases outstanding	1,360,599	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