Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES
Net income	$ 111,680	$ 49,165
Adjustments to reconcile net income to cash provided by operating activities:
Provision (credit) for loan and lease losses	13,511	(9,202)
Deferred tax expense (benefit)	(23,762)	(3,640)
Net change in current taxes	(25,261)	5,973
Depreciation	44,312	35,455
Increase (decrease) in accrued interest payable	(2,359)	560
Net (increase) decrease in income earned not collected	(9,475)	(629)
Gain on acquisition	42,930	0
Securities (gains) losses	(5,273)	0
Origination of loans held for sale	(355,819)	(123,144)
Proceeds from sale of loans held for sale	338,466	123,967
Gain on sale of loans	(3,991)	(2,220)
Net writedowns/losses on other real estate	3,188	6,993
Net amortization of premiums and discounts	(45,662)	(17,288)
Amortization of intangible assets	8,302	1,207
FDIC receivable for loss share agreements	27,291	17,121
FDIC payable for loss share agreements	5,503	4,903
Net change in other assets	14,243	(32,693)
Net change in other liabilities	25,085	35,033
Net cash provided by operating activities	77,049	91,561
INVESTING ACTIVITIES
Net change in loans outstanding	(566,524)	(57,271)
Purchases of investment securities available for sale	(1,435,387)	(1,409,878)
Proceeds from maturities of investment securities held to maturity	167	214
Proceeds from maturities of investment securities available for sale	757,780	1,529,687
Proceeds from sales of investment securities available for sale	522,024	0
Net change in overnight investments	21,578	(259,150)
Cash (paid to) received from the FDIC for loss share agreements	(10,890)	(4,350)
Proceeds from sale of other real estate	47,391	38,370
Additions to premises and equipment	(31,921)	(39,550)
Business acquisition, net of cash acquired	123,137	18,194
Net cash (used) provided by investing activities	(572,645)	(183,734)
FINANCING ACTIVITIES
Net change in time deposits	(359,125)	(219,297)
Net change in demand and other interest-bearing deposits	926,092	270,118
Net change in short-term borrowings	(269,460)	81,716
Repayment of long-term obligations	(4,483)	(1,240)
Origination of long-term obligations	120,000	0
Cash dividends paid	(7,206)	(5,771)
Net cash provided (used) by financing activities	405,818	125,526
Change in cash and due from banks	(89,778)	33,353
Cash and due from banks at beginning of period	604,182	533,599
Cash and due from banks at end of period	514,404	566,952
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Transfers of loans to other real estate	30,350	25,080
Dividends Declared but not Paid	$ 3,603	$ 2,886