Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities
Net income	$ 112,445	$ 113,723
Adjustments to reconcile net income to net cash provided and used by operating activities:
Provision for loan losses	14,200	17,214
Provision/(benefit) for deferred income taxes	22,893	4,162
Depreciation and amortization	32,635	31,274
Benefit attributable to FDIC loss share	257	6,046
Accretion of acquired loans	(33,978)	(51,170)
Amortization and accretion of investment securities, net
Available-for-sale	5,062	5,407
Held-to-maturity	1,866	2,110
Losses/(gains) on sales and calls of available-for-sale investment securities, net	(2,756)	(921)
Originations of loans held for sale	(14,060)	(51,673)
Proceeds from sales of loans, primarily mortgage loans sold in the secondary markets	15,938	60,429
Gains on sales of loans, net	(368)	(760)
Amortization of intangible assets	4,608	5,196
Recognition of stock compensation expense	8,197	7,666
Net decrease/(increase) in other assets	(171,074)	1,442
Net increase/(decrease) in other liabilities	142,897	(1,519)
NET CASH PROVIDED BY OPERATING ACTIVITIES	138,762	148,626
Proceeds from sale of investment securities
Available-for-sale	(113)	171,725
Held-to-maturity	0	668
Other	0	1,015
Proceeds from prepayments, calls, and maturities of investment securities
Available-for-sale	319,566	285,541
Held-to-maturity	214,489	211,636
Other	0	165
Purchases of investment securities
Available-for-sale	(616,645)	(758,486)
Held-to-maturity	(57,469)	(94,756)
Other	(221)	(172)
Net decrease/(increase) in loans and leases	(262,863)	(356,117)
Purchases of premises and equipment	(2,412)	(9,950)
Sales of premises and equipment	8,501	8,407
NET CASH PROVIDED/(USED) BY INVESTING ACTIVITIES	(397,167)	(540,324)
Financing Activities
Net increase in demand accounts	70,037	215,269
Net increase/(decrease) in savings and money market accounts	904,745	19,104
Net decrease in certificates and other time deposits	(130,142)	(65,188)
Net increase/(decrease) in securities sold under agreements to repurchase	(350,185)	246,659
Net increase/(decrease) in wholesale borrowings	(112,201)	(61,997)
Repurchase of common stock warrant	0	(12,150)
Cash dividends - common	(56,264)	(52,643)
Cash dividends - preferred	(2,938)	(2,938)
Restricted stock activity	(4,177)	(4,253)
NET CASH PROVIDED/(USED) BY FINANCING ACTIVITIES	318,875	281,863
Increase/(Decrease) in cash and cash equivalents	60,470	(109,835)
Cash and cash equivalents at beginning of year	463,817	697,424
Cash and cash equivalents at end of year	524,287	587,589
Cash paid during period for:
Interest	30,920	27,970
Federal income taxes	$ 4,859	$ 26,125