Consolidated Statements Of Condition (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010
Assets
Cash and due from banks	$ 140,434	$ 153,690	$ 123,712
Federal funds sold and securities purchased under resale agreements	43,634	18,890	28,664
Interest-bearing deposits with other banks (balance restricted for securitization investors of $23,276 at June 30, 2011, $36,620 at December 31, 2010, and $83,501 at June 30, 2010)	990,308	865,575	1,110,123
Available-for-sale securities, at fair value	1,456,426	1,496,302	1,418,035
Trading account securities	509	4,879	38,261
Federal Home Loan Bank and Federal Reserve Bank stock	86,761	82,407	79,300
Brokerage customer receivables	29,736	24,549	24,291
Mortgage loans held-for-sale, at fair value	133,083	356,662	222,703
Mortgage loans held-for-sale, at lower of cost or market	5,881	14,785	15,278
Loans, net of unearned income, excluding covered loans	9,925,077	9,599,886	9,324,163
Covered loans	408,669	334,353	275,563
Total loans, balance	10,333,746	9,934,239	9,599,726
Less: Allowance for loan losses	117,362	113,903	106,547
Less: Allowance for covered loan losses	7,443
Net Loans (balance restricted for securitization investors of $660,294 at June 30, 2011, $646,268 at December 31, 2010, and $598,857 at June 30, 2010)	10,208,941	9,820,336	9,493,179
Premises and equipment, net	403,577	363,696	346,806
FDIC indemnification asset	110,049	118,182	114,102
Accrued interest receivable and other assets	389,634	366,438	374,172
Trade date securities receivable	322,091		28,634
Goodwill	283,301	281,190	278,025
Other intangible assets	11,532	12,575	13,275
Total assets	14,615,897	13,980,156	13,708,560
Liabilities and Shareholders' Equity
Non-interest bearing	1,397,433	1,201,194	953,814
Interest bearing	9,861,827	9,602,479	9,670,928
Total deposits	11,259,260	10,803,673	10,624,742
Notes payable	1,000	1,000	1,000
Federal Home Loan Bank advances	423,500	423,500	415,571
Other borrowings	432,706	260,620	218,424
Secured borrowings - owed to securitization investors	600,000	600,000	600,000
Subordinated notes	40,000	50,000	55,000
Junior subordinated debentures	249,493	249,493	249,493
Trade date securities payable	2,243		200
Accrued interest payable and other liabilities	134,309	155,321	159,394
Total liabilities	13,142,511	12,543,607	12,323,824
Shareholders' Equity:
Common stock, no par value; $1.00 stated value; 60,000,000 shares authorized; 34,988,497 shares issued at June 30, 2011, 34,864,068 shares issued at December 31, 2010, and 31,084,417 shares issued at June 30, 2010	34,988	34,864	31,084
Surplus	969,315	965,203	680,261
Treasury stock, at cost, 1,441 shares at June 30, 2011, no shares at December 31, 2010, and 119 shares at June 30, 2010, respectively.	(50)		(4)
Retained earnings	415,297	392,354	381,969
Accumulated other comprehensive income (loss)	4,132	(5,512)	4,966
Total shareholders' equity	1,473,386	1,436,549	1,384,736
Total liabilities and shareholders' equity	14,615,897	13,980,156	13,708,560
Series A Preferred Stock [Member]
Shareholders' Equity:
Preferred stock	49,704	49,640	49,379
Series B Preferred Stock [Member]
Shareholders' Equity:
Preferred stock			$ 237,081