Consolidated Statements Of Condition (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Assets
Cash and due from banks	$ 147,270	$ 153,690	$ 155,067
Federal funds sold and securities purchased under resale agreements	13,452	18,890	88,913
Interest-bearing deposits with other banks (balance restricted for securitization investors of $37,165 at September 30, 2011, $36,620 at December 31, 2010, and $47,780 at September 30, 2010)	1,101,353	865,575	1,224,584
Available-for-sale securities, at fair value	1,267,682	1,496,302	1,324,179
Trading account securities	297	4,879	4,935
Federal Home Loan Bank and Federal Reserve Bank stock	99,749	82,407	80,445
Brokerage customer receivables	27,935	24,549	25,442
Mortgage loans held-for-sale, at fair value	204,081	356,662	307,231
Mortgage loans held-for-sale, at lower of cost or market	8,955	14,785	13,209
Loans, net of unearned income, excluding covered loans	10,272,711	9,599,886	9,461,155
Covered loans	680,075	334,353	353,840
Total loans	10,952,786	9,934,239	9,814,995
Less: Allowance for loan losses	118,649	113,903	110,432
Less: Allowance for covered loan losses	12,496
Net loans (balance restricted for securitization investors of $643,466 at September 30, 2011, $646,268 at December 31, 2010, and $635,755 at September 30, 2010)	10,821,641	9,820,336	9,704,563
Premises and equipment, net	412,478	363,696	353,445
FDIC indemnification asset	379,306	118,182	161,640
Accrued interest receivable and other assets	468,711	366,438	365,496
Trade date securities receivable	637,112
Goodwill	302,369	281,190	278,025
Other intangible assets	22,413	12,575	13,194
Total assets	15,914,804	13,980,156	14,100,368
Liabilities and Shareholders' Equity
Non-interest bearing	1,631,709	1,201,194	1,042,730
Interest bearing	10,674,299	9,602,479	9,919,509
Total deposits	12,306,008	10,803,673	10,962,239
Notes payable	3,004	1,000	1,000
Federal Home Loan Bank advances	474,570	423,500	414,832
Other borrowings	448,082	260,620	241,522
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	73,874		2,045
Accrued interest payable and other liabilities	191,586	155,321	175,325
Total liabilities	14,386,617	12,543,607	12,701,456
Shareholders' Equity:
Common stock, no par value; $1.00 stated value; 60,000,000 shares authorized; 35,926,137 shares issued at September 30, 2011, 34,864,068 shares issued at December 31, 2010, and 31,145,332 shares issued at September 30, 2010	35,926	34,864	31,145
Surplus	997,854	965,203	682,318
Treasury stock, at cost, 2,071 shares at September 30, 2011, no shares at December 31, 2010, and 1,592 shares at September, 30 2010.	(68)		(51)
Retained earnings	441,268	392,354	394,323
Accumulated other comprehensive income (loss)	3,471	(5,512)	3,943
Total shareholders' equity	1,528,187	1,436,549	1,398,912
Total liabilities and shareholders' equity	15,914,804	13,980,156	14,100,368
Series A Preferred Stock [Member]
Shareholders' Equity:
Preferred stock	49,736	49,640	49,379
Series B Preferred Stock [Member]
Shareholders' Equity:
Preferred stock			$ 237,855