Fair Value Measurement (Schedule Of Carrying Value And Fair Value Of Financial Instruments Not Recorded At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
FINANCIAL ASSETS:
Cash and cash equivalents	$ 178,685		$ 223,532
Trading securities	5,958		3,747
Securities available for sale	1,790,978		2,625,229
Securities held to maturity	5,563		4,541
Loans held for sale, at fair value	104,664		320,132
Non-covered loans and leases, net	7,354,403		6,681,080
Covered loans and leases, net	363,992		477,078
Restricted equity securities	30,685		33,443
Mortgage servicing rights	47,765		27,428	18,184	14,454
Bank owned life insurance	96,938		93,831
FDIC indemnification asset	23,174		52,798	91,089
Derivatives	17,921		23,942
FINANCIAL LIABILITIES:
Deposits	9,117,660		9,379,275	9,236,690
Securities sold under agreements to repurchase	224,882		137,075
Term debt	251,494		253,605
Junior subordinated debentures, at fair value	87,274		85,081
Junior subordinated debentures, at amortized cost	101,899		110,985
Carrying Value [Member]
FINANCIAL ASSETS:
Cash and cash equivalents	790,423		543,787
Trading securities	5,958		3,747
Securities available for sale	1,790,978		2,625,229
Securities held to maturity	5,563		4,541
Loans held for sale, at fair value	104,664		320,132
Non-covered loans and leases, net	7,269,089		6,595,689
Covered loans and leases, net	363,992		477,078
Restricted equity securities	30,685		33,443
Mortgage servicing rights	47,765		27,428
Bank owned life insurance	96,938		93,831
FDIC indemnification asset	23,174		52,798
Derivatives	17,921		23,842
Visa Class B common stock	0		0
FINANCIAL LIABILITIES:
Deposits	9,117,660		9,379,275
Securities sold under agreements to repurchase	224,882		137,075
Term debt	251,494		253,605
Junior subordinated debentures, at fair value	87,274		85,081
Junior subordinated debentures, at amortized cost	101,899		110,985
Derivatives	14,562		22,971
Estimated Fair Value [Member]
FINANCIAL ASSETS:
Cash and cash equivalents	790,423		543,787
Trading securities	5,958		3,747
Securities available for sale	1,790,978		2,625,229
Securities held to maturity	5,874		4,732
Loans held for sale, at fair value	104,664		320,132
Non-covered loans and leases, net	7,250,596		6,652,179
Covered loans and leases, net	409,555		543,628
Restricted equity securities	30,685		33,443
Mortgage servicing rights	47,765		27,428
Bank owned life insurance	96,938		93,831
FDIC indemnification asset	6,001		18,714
Derivatives	17,921		23,842
Visa Class B common stock	41,700		28,385
FINANCIAL LIABILITIES:
Deposits	9,125,832		9,396,646
Securities sold under agreements to repurchase	224,882		137,075
Term debt	270,004		289,404
Junior subordinated debentures, at fair value	87,274	[1]	85,081
Junior subordinated debentures, at amortized cost	72,009		78,529
Derivatives	$ 14,562		$ 22,971

[1] Includes purchase accounting adjustments, net of accumulated amortization, for junior subordinated debentures assumed in connection with previous mergers as well as fair value adjustments related to trusts recorded at fair value.