Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net income	$ 37,346	$ 30,344
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	9,946	14,061
Provision (benefit) for deferred income taxes	(4,903)	2,615
Depreciation and amortization	5,630	5,692
Benefit attributable to FDIC loss share	5,539	4,899
Accretion of acquired loans	(15,511)	(21,484)
Accretion income for lease financing	(915)	(709)
Amortization and accretion of investment securities, net
Available for sale	3,135	3,760
Held to Maturity	1,308	13
Realized (gains) losses on sale of securities	9	(260)
Originations of loans held for sale	(140,723)	(194,576)
Proceeds from sales of loans, primarily mortgage loans sold in the secondary markets	154,143	183,778
Gains on sales of loans, net	(4,196)	(1,572)
Amortization of Intangible Assets	317	483
Recognition of stock compensation expense	1,972	4,169
Net Increase (Decrease) in Other Operating Assets	(7,451)	28,706
Net Increase (Decrease) in Other Operating Liabilities	4,047	(38,354)
NET CASH PROVIDED BY OPERATING ACTIVITIES	49,693	21,565
Proceeds from sales of securities
Proceeds from Sale of Available-for-sale Securities	25,674	94,865
Proceeds from prepayments, calls, and maturities
Available for sale	173,778	218,006
Held to maturity	17,010	1,591
Purchases of securities
Available for sale	(405,053)	(443,434)
Held to maturity	(61,773)	(19,620)
Other	(280)	0
Net decrease (increase) in loans and leases	77,681	6,659
Purchases of premises and equipment	(1,753)	(1,090)
Sales of premises and equipment	135	0
NET CASH PROVIDED (USED) BY INVESTING ACTIVITIES	(174,581)	(143,023)
Financing Activities
Net increase in demand accounts	106,155	162,576
Net increase in savings and money market accounts	132,246	147,138
Net decrease in certificates and other time deposits	(72,059)	(93,158)
Net (decrease) increase in securities sold under agreements to repurchase	(277,670)	62,495
Proceeds from Issuance of Long-term Debt	247,941	0
Net decrease in wholesale borrowings	(880)	(26,851)
Proceeds from Issuance of Preferred Stock and Preference Stock	96,570	0
Dividends, Common Stock, Cash	(17,377)	(17,337)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(930)	0
Restricted stock activity	(19)	(739)
NET CASH (USED) PROVIDED BY FINANCING ACTIVITIES	213,977	234,124
Increase (decrease) in cash and cash equivalents	89,089	112,666
Cash and cash equivalents at beginning of period	258,014	377,319
Cash and cash equivalents at end of period	347,103	489,985
Cash paid during period for:
Interest, net of amounts capitalized	6,765	6,788
Federal income taxes	$ 0	$ 0