Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Activities
Net income	$ 119,600	$ 120,527
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation, amortization and accretion	45,059	31,412
Provision for credit losses	43,047	27,777
Deferred tax expense	10,390	3,874
Net securities gains	(596)	(319)
Tax benefit of stock-based compensation	(292)	(5)
Loans originated for sale	(484,437)	(336,776)
Loans sold	482,161	346,174
Gain on sale of loans	(10,806)	(6,794)
Net change in:
Interest receivable	(1,372)	(4,457)
Interest payable	945	(414)
Bank owned life insurance	(3,103)	(4,266)
Other, net	(10,708)	8,144
Net cash flows provided by operating activities	189,888	184,877
Investing Activities
Net change in loans and leases	(666,413)	(657,586)
Securities available for sale:
Purchases	(753,544)	(279,636)
Sales	615,199	33,499
Maturities	437,406	212,140
Securities held to maturity:
Purchases	(875,597)	(279,998)
Maturities	259,202	203,689
Purchase of bank owned life insurance	(16,579)	(72,688)
Withdrawal/surrender of bank owned life insurance		72,664
Increase in premises and equipment	(37,074)	(7,304)
Net cash received in business combinations	245,762	148,159
Net cash flows used in investing activities	(791,638)	(627,061)
Financing Activities
Demand (non-interest bearing and interest bearing) and savings accounts	858,937	1,304,345
Time deposits	(134,234)	(78,764)
Short-term borrowings	(15,192)	(754,356)
Increase in long-term borrowings	39,888	20,976
Decrease in long-term borrowings	(119,005)	(19,804)
Net proceeds from issuance of common stock	9,358	10,515
Tax benefit of stock-based compensation	292	5
Cash dividends paid:
Preferred stock	(6,030)	(6,030)
Common stock	(76,133)	(63,330)
Net cash flows provided by financing activities	557,881	413,557
Net Decrease in Cash and Cash Equivalents	(43,869)	(28,627)
Cash and cash equivalents at beginning of period	489,119	287,393
Cash and Cash Equivalents at End of Period	$ 445,250	$ 258,766