Allowance For Loan And Lease Losses (Allocation Of Allowance For Loan And Lease Losses) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011		Sep. 30, 2011		Dec. 31, 2010		Sep. 30, 2010
Impaired noncovered loans and leases	$ 254,184	[1]	$ 254,184	[1]	$ 227,765	[2]	$ 218,046	[1]
Total impaired noncovered loans and leases	119,599		119,599		107,779
Total impaired loans not covered by loss share							57,968
Average balance	123,805		119,034		51,306
Unpaid principal balance	125,078		125,078		108,505
Interest Income Recognized	594		2,267		4,308
Construction And Land Development - Commercial [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	4,897		4,897		28,327
Commercial Mortgage [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	59,491		59,491		52,658
Other Commercial Real Estate [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	580		580		964
Residential Mortgage [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	12,033		12,033		6,162
Commercial And Industrial [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	7,099		7,099		11,624
Other [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		76
Consumer [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	992		992		102
Lease Financing [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	339		339		693
Construction And Land Development - Non - Commercial [Member] | With A Recorded Allowance [Member]
Impaired noncovered loans and leases	2,844		2,844		514
With A Recorded Allowance [Member]
Total impaired noncovered loans and leases	88,275		88,275		101,120
Total impaired loans not covered by loss share							50,620
Construction And Land Development - Commercial [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	17,104		17,104		0
Commercial Mortgage [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	7,097		7,097		5,294
Other Commercial Real Estate [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
Residential Mortgage [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
Commercial And Industrial [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	7,123		7,123		1,365
Other [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
Consumer [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
Lease Financing [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
Construction And Land Development - Non - Commercial [Member] | With No Recorded Allowance [Member]
Impaired noncovered loans and leases	0		0		0
With No Recorded Allowance [Member]
Total impaired noncovered loans and leases	31,324		31,324		6,659
Total impaired loans not covered by loss share							7,348
Construction And Land Development - Commercial [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	310		310		5,883
Commercial Mortgage [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	4,641		4,641		4,601
Other Commercial Real Estate [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	43		43		67
Residential Mortgage [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	1,025		1,025		384
Commercial And Industrial [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	433		433		598
Other [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	0		0		7
Consumer [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	45		45		9
Lease Financing [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	25		25		58
Construction And Land Development - Non - Commercial [Member] | Related Allowance Recorded [Member]
Impaired noncovered loans and leases	92		92		13
Related Allowance Recorded [Member]
Total impaired noncovered loans and leases	6,614		6,614		11,620
Total impaired loans not covered by loss share							9,648
Construction And Land Development - Commercial [Member]
Impaired noncovered loans and leases	22,001		22,001		28,327
Average balance	24,311		27,151		19,235
Unpaid principal balance	27,162		27,162		28,610
Interest Income Recognized	5		109		736
Commercial Mortgage [Member]
Impaired noncovered loans and leases	66,588		66,588		57,952
Average balance	68,436		66,110		25,451
Unpaid principal balance	66,906		66,906		59,760
Interest Income Recognized	297		1,375		2,548
Other Commercial Real Estate [Member]
Impaired noncovered loans and leases	580		580		964
Average balance	1,175		1,065		353
Unpaid principal balance	580		580		964
Interest Income Recognized	0		25		42
Commercial And Industrial [Member]
Impaired noncovered loans and leases	14,222		14,222		12,989
Average balance	14,142		12,741		3,420
Unpaid principal balance	14,222		14,222		11,624
Interest Income Recognized	149		372		663
Lease Financing [Member]
Impaired noncovered loans and leases	339		339		693
Average balance	478		653		281
Unpaid principal balance	339		339		693
Interest Income Recognized	3		15		37
Other [Member]
Impaired noncovered loans and leases	0		0		76
Average balance	0		38		31
Unpaid principal balance	0		0		76
Interest Income Recognized	0		0		5
Residential Mortgage [Member]
Impaired noncovered loans and leases	12,033		12,033		6,162
Average balance	11,567		9,121		2,314
Unpaid principal balance	12,033		12,033		6,162
Interest Income Recognized	100		276		212
Construction And Land Development - Non - Commercial [Member]
Impaired noncovered loans and leases	2,844		2,844		514
Average balance	2,703		1,608		182
Unpaid principal balance	2,844		2,844		514
Interest Income Recognized	38		83		56
Consumer [Member]
Impaired noncovered loans and leases	992		992		102
Average balance	993		547		39
Unpaid principal balance	992		992		102
Interest Income Recognized	$ 2		$ 12		$ 9

[1] Unaudited

[2] Derived from 2010 Annual Report on Form 10-K.