Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities
Net income	$ 54,136	$ 57,139
Adjustments to reconcile net income to net cash provided and used by operating activities:
Provision for loan losses	7,809	8,248
Provision/(benefit) for deferred income taxes	(292)	(1,663)
Depreciation and amortization	16,339	14,739
Benefit attributable to FDIC loss share	269	4,227
Accretion of acquired loans	(17,890)	(26,339)
Amortization and accretion of investment securities, net
Available-for-sale	2,355	2,680
Held-to-maturity	744	814
Losses/(gains) on sales and calls of available-for-sale investment securities, net	0	354
Originations of loans held for sale	(7,493)	(40,442)
Proceeds from sales of loans, primarily mortgage loans sold in the secondary markets	7,920	50,868
Gains on sales of loans, net	(204)	(566)
Amortization of intangible assets	2,304	2,598
Change in unrealized securities' holdings/(losses)	0	0
Recognition of stock compensation expense	3,279	3,641
Net decrease/(increase) in other assets	(39,766)	(48,684)
Net increase/(decrease) in other liabilities	6,238	25,224
NET CASH PROVIDED BY OPERATING ACTIVITIES	35,748	52,130
Proceeds from sale of investment securities
Available-for-sale	0	39,302
Held-to-maturity	0	1,015
Proceeds from prepayments, calls, and maturities of investment securities
Available-for-sale	150,299	129,296
Held-to-maturity	91,890	92,241
Other	0	166
Purchases of investment securities
Available-for-sale	(249,424)	(404,163)
Held-to-maturity	(33,669)	(46,164)
Other	0	0
Net decrease/(increase) in loans and leases	(146,288)	(152,359)
Purchases of premises and equipment	(58)	(5,795)
Sales of premises and equipment	3,582	7,965
NET CASH PROVIDED/(USED) BY INVESTING ACTIVITIES	(183,668)	(338,496)
Financing Activities
Net increase in demand accounts	277,808	128,320
Net increase/(decrease) in savings and money market accounts	781,706	210,941
Net decrease in certificates and other time deposits	(66,151)	81,669
Net increase/(decrease) in securities sold under agreements to repurchase	(317,225)	(159,220)
Net increase/(decrease) in wholesale borrowings	(201,652)	(111,443)
Cash dividends - common	(28,129)	(26,461)
Cash dividends - preferred	(1,469)	(1,469)
Restricted stock activity	(888)	(970)
NET CASH PROVIDED/(USED) BY FINANCING ACTIVITIES	444,000	121,367
Increase/(Decrease) in cash and cash equivalents	296,080	(164,999)
Cash and cash equivalents at beginning of year	463,817	697,424
Cash and cash equivalents at end of year	759,897	532,425
Cash paid during period for:
Interest	16,197	14,036
Federal income taxes	$ 0	$ 2,000