ALLOWANCE FOR LOAN AND LEASE LOSSES (Summary Of Activity In Allowance For Loan And Lease Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Beginning balance	$ 172,282	$ 227,765	$ 172,282	$ 157,569
Charge-offs		(196,840)	(95,316)	(69,354)
Recoveries		6,942	6,599	4,703
Provision		232,277	143,519	79,364
Adoption Of Change In Accounting For Qualifying Special Purpose Entity			681
Ending balance		270,144	227,765	172,282
Net loans and leases		13,673,645	13,260,264
Allowance for Loan and Lease Losses, Period Increase (Decrease)	681	(189,898)	(88,717)	(64,651)
Covered Loans [Member]
Beginning balance	3,500	51,248	3,500	0
Charge-offs		(137,553)	(39,533)	0
Recoveries		1,088	409	0
Provision		174,478	86,872	3,500
Adoption Of Change In Accounting For Qualifying Special Purpose Entity			0
Ending balance		89,261	51,248	3,500
ALLL for loans and leases acquired with deteriorated credit quality		89,261	51,248
Loans and leases acquired with deteriorated credit quality		2,362,152	2,007,452
Allowance for Loan and Lease Losses, Period Increase (Decrease)		(136,465)	(39,124)	0
Noncovered Loans [Member]
Beginning balance	168,782	176,517	168,782	157,569
Charge-offs		(59,287)	(55,783)	(69,354)
Recoveries		5,854	6,190	4,703
Provision		57,799	56,647	75,864
Adoption Of Change In Accounting For Qualifying Special Purpose Entity			681
Ending balance		180,883	176,517	168,782
ALLL for loans and leases individually evaluated for impairment		7,962	11,620
ALLL for loans and leases collectively evaluated for impairment		158,799	151,034
Loans and leases individually evaluated for impairment		156,301	107,779
Loans and leases collectively evaluated for impairment		11,425,336	11,372,798
Non-specific ALLL		14,122	13,863
Total allowance for loan and lease losses		180,883	176,517
Net loans and leases		11,581,637	11,480,577
Allowance for Loan and Lease Losses, Period Increase (Decrease)		(53,433)	(49,593)	(64,651)
Construction And Land Development - Commercial [Member]
Ending balance		24,994	28,327
Construction And Land Development - Commercial [Member] | Covered Loans [Member]
Beginning balance		20,654
Charge-offs		(36,432)
Recoveries		389
Provision		32,082
Ending balance		16,693
ALLL for loans and leases acquired with deteriorated credit quality		16,693	20,654
Loans and leases acquired with deteriorated credit quality		338,873	368,420
Construction And Land Development - Commercial [Member] | Noncovered Loans [Member]
Beginning balance		10,512
Charge-offs		(11,189)
Recoveries		218
Provision		5,926
Ending balance		5,467	10,512
ALLL for loans and leases individually evaluated for impairment		1,139	5,883
ALLL for loans and leases collectively evaluated for impairment		4,328	4,629
Loans and leases individually evaluated for impairment		26,782	28,327
Loans and leases collectively evaluated for impairment		354,381	310,602
Non-specific ALLL		0	0
Total allowance for loan and lease losses		5,467	10,512
Net loans and leases		381,163	338,929
Commercial Mortgage [Member]
Ending balance		65,527	57,952
Commercial Mortgage [Member] | Covered Loans [Member]
Beginning balance		13,199
Charge-offs		(49,905)
Recoveries		83
Provision		76,180
Ending balance		39,557
ALLL for loans and leases acquired with deteriorated credit quality		39,557	13,199
Loans and leases acquired with deteriorated credit quality		1,260,589	1,089,064
Commercial Mortgage [Member] | Noncovered Loans [Member]
Beginning balance		64,772
Charge-offs		(6,975)
Recoveries		945
Provision		8,744
Ending balance		67,486	64,772
ALLL for loans and leases individually evaluated for impairment		5,266	4,601
ALLL for loans and leases collectively evaluated for impairment		62,220	60,171
Loans and leases individually evaluated for impairment		92,872	57,952
Loans and leases collectively evaluated for impairment		5,012,121	4,679,910
Non-specific ALLL		0	0
Total allowance for loan and lease losses		67,486	64,772
Net loans and leases		5,104,993	4,737,862
Other Commercial Real Estate [Member]
Ending balance		2,580	964
Other Commercial Real Estate [Member] | Covered Loans [Member]
Beginning balance		4,148
Charge-offs		(29,063)
Recoveries		479
Provision		41,298
Ending balance		16,862
ALLL for loans and leases acquired with deteriorated credit quality		16,862	4,148
Loans and leases acquired with deteriorated credit quality		158,394	210,661
Other Commercial Real Estate [Member] | Noncovered Loans [Member]
Beginning balance		2,200
Charge-offs		(24)
Recoveries		23
Provision		(30)
Ending balance		2,169	2,200
ALLL for loans and leases individually evaluated for impairment		283	67
ALLL for loans and leases collectively evaluated for impairment		1,886	2,133
Loans and leases individually evaluated for impairment		5,686	964
Loans and leases collectively evaluated for impairment		139,085	148,746
Non-specific ALLL		0	0
Total allowance for loan and lease losses		2,169	2,200
Net loans and leases		144,771	149,710
Commercial And Industrial [Member]
Ending balance		14,268	12,989
Commercial And Industrial [Member] | Covered Loans [Member]
Beginning balance		6,828
Charge-offs		(6,115)
Recoveries		12
Provision		4,775
Ending balance		5,500
ALLL for loans and leases acquired with deteriorated credit quality		5,500	6,828
Loans and leases acquired with deteriorated credit quality		113,442	132,477
Commercial And Industrial [Member] | Noncovered Loans [Member]
Beginning balance		24,089
Charge-offs		(5,879)
Recoveries		1,025
Provision		4,488
Ending balance		23,723	24,089
ALLL for loans and leases individually evaluated for impairment		640	598
ALLL for loans and leases collectively evaluated for impairment		23,083	23,491
Loans and leases individually evaluated for impairment		15,996	12,989
Loans and leases collectively evaluated for impairment		1,748,411	1,856,501
Non-specific ALLL		0	0
Total allowance for loan and lease losses		23,723	24,089
Net loans and leases		1,764,407	1,869,490
Lease Financing [Member]
Ending balance		322	693
Lease Financing [Member] | Covered Loans [Member]
Beginning balance		0
Charge-offs		0
Recoveries		0
Provision		13
Ending balance		13
ALLL for loans and leases acquired with deteriorated credit quality		13	0
Loans and leases acquired with deteriorated credit quality		57	0
Lease Financing [Member] | Noncovered Loans [Member]
Beginning balance		3,384
Charge-offs		(579)
Recoveries		133
Provision		350
Ending balance		3,288	3,384
ALLL for loans and leases individually evaluated for impairment		17	58
ALLL for loans and leases collectively evaluated for impairment		3,271	3,326
Loans and leases individually evaluated for impairment		328	693
Loans and leases collectively evaluated for impairment		312,541	300,596
Non-specific ALLL		0	0
Total allowance for loan and lease losses		3,288	3,384
Net loans and leases		312,869	301,289
Other [Member]
Ending balance		0	76
Other [Member] | Noncovered Loans [Member]
Beginning balance		1,473
Charge-offs		(89)
Recoveries		2
Provision		(71)
Ending balance		1,315	1,473
ALLL for loans and leases individually evaluated for impairment		14	7
ALLL for loans and leases collectively evaluated for impairment		1,301	1,466
Loans and leases individually evaluated for impairment		193	76
Loans and leases collectively evaluated for impairment		158,176	181,939
Non-specific ALLL		0	0
Total allowance for loan and lease losses		1,315	1,473
Net loans and leases		158,369	182,015
Residential Mortgage [Member]
Ending balance		9,776	6,162
Residential Mortgage [Member] | Covered Loans [Member]
Beginning balance		113
Charge-offs		(5,723)
Recoveries		94
Provision		10,949
Ending balance		5,433
ALLL for loans and leases acquired with deteriorated credit quality		5,433	113
Loans and leases acquired with deteriorated credit quality		327,568	74,495
Residential Mortgage [Member] | Noncovered Loans [Member]
Beginning balance		7,009
Charge-offs		(5,566)
Recoveries		989
Provision		6,447
Ending balance		8,879	7,009
ALLL for loans and leases individually evaluated for impairment		411	384
ALLL for loans and leases collectively evaluated for impairment		8,468	6,625
Loans and leases individually evaluated for impairment		9,776	6,162
Loans and leases collectively evaluated for impairment		774,342	872,630
Non-specific ALLL		0	0
Total allowance for loan and lease losses		8,879	7,009
Net loans and leases		784,118	878,792
Revolving Mortgage [Member] | Covered Loans [Member]
Beginning balance		676
Charge-offs		0
Recoveries		0
Provision		(599)
Ending balance		77
ALLL for loans and leases acquired with deteriorated credit quality		77	676
Loans and leases acquired with deteriorated credit quality		51,552	17,866
Revolving Mortgage [Member] | Noncovered Loans [Member]
Beginning balance		18,016
Charge-offs		(13,940)
Recoveries		653
Provision		22,316
Ending balance		27,045	18,016
ALLL for loans and leases individually evaluated for impairment		0	0
ALLL for loans and leases collectively evaluated for impairment		27,045	18,016
Loans and leases individually evaluated for impairment		0	0
Loans and leases collectively evaluated for impairment		2,296,306	2,233,853
Non-specific ALLL		0	0
Total allowance for loan and lease losses		27,045	18,016
Net loans and leases		2,296,306	2,233,853
Construction And Land Development - Non - Commercial [Member]
Ending balance		3,676	514
Construction And Land Development - Non - Commercial [Member] | Covered Loans [Member]
Beginning balance		5,607
Charge-offs		(9,912)
Recoveries		30
Provision		8,927
Ending balance		4,652
ALLL for loans and leases acquired with deteriorated credit quality		4,652	5,607
Loans and leases acquired with deteriorated credit quality		105,536	105,805
Construction And Land Development - Non - Commercial [Member] | Noncovered Loans [Member]
Beginning balance		1,751
Charge-offs		(2,617)
Recoveries		189
Provision		2,104
Ending balance		1,427	1,751
ALLL for loans and leases individually evaluated for impairment		145	13
ALLL for loans and leases collectively evaluated for impairment		1,282	1,738
Loans and leases individually evaluated for impairment		3,676	514
Loans and leases collectively evaluated for impairment		133,595	192,440
Non-specific ALLL		0	0
Total allowance for loan and lease losses		1,427	1,751
Net loans and leases		137,271	192,954
Consumer [Member]
Ending balance		992	102
Consumer [Member] | Covered Loans [Member]
Beginning balance		23
Charge-offs		(403)
Recoveries		1
Provision		853
Ending balance		474
ALLL for loans and leases acquired with deteriorated credit quality		474	23
Loans and leases acquired with deteriorated credit quality		6,141	8,664
Consumer [Member] | Noncovered Loans [Member]
Beginning balance		29,448
Charge-offs		(12,429)
Recoveries		1,677
Provision		7,266
Ending balance		25,962	29,448
ALLL for loans and leases individually evaluated for impairment		47	9
ALLL for loans and leases collectively evaluated for impairment		25,915	29,439
Loans and leases individually evaluated for impairment		992	102
Loans and leases collectively evaluated for impairment		496,378	595,581
Non-specific ALLL		0	0
Total allowance for loan and lease losses		25,962	29,448
Net loans and leases		497,370	595,683
Non Specific [Member] | Noncovered Loans [Member]
Beginning balance		13,863
Charge-offs		0
Recoveries		0
Provision		259
Ending balance		14,122	13,863
ALLL for loans and leases individually evaluated for impairment		0	0
ALLL for loans and leases collectively evaluated for impairment		0	0
Loans and leases individually evaluated for impairment		0	0
Loans and leases collectively evaluated for impairment		0	0
Non-specific ALLL		14,122	13,863
Total allowance for loan and lease losses		14,122	13,863
Net loans and leases		$ 0	$ 0