Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income	$ 61,326	$ 46,816
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,500	4,600
Gains on sales of loans	(4,900)	(3,137)
Proceeds from sales of loans	176,029	105,870
Loans originated for sale	(171,245)	(106,861)
Net gains from sales/writedowns of other real estate and repossessed assets	(2,428)	(1,443)
Depreciation of premises and equipment	8,182	6,431
Amortization of intangible assets	6,126	2,211
Net gains on sale of investment securities	(612)	0
Net amortization of premiums and discounts on investment securities	4,254	3,183
Share-based compensation expense	2,507	1,881
Deferred federal income taxes	(2,900)	(2,000)
Net increase in interest receivable and other assets	(17,114)	(297)
Net (decrease) increase in interest payable and other liabilities	(8,438)	403
Net cash provided by operating activities	55,287	57,657
Investment securities – available-for-sale:
Proceeds from sales	13,173	0
Proceeds from maturities, calls and principal reductions	164,984	109,004
Investment securities – held-to-maturity:
Proceeds from maturities, calls and principal reductions	72,071	75,168
Purchases	(254,695)	(120,367)
Net increase in loans	(434,767)	(407,835)
Proceeds from sales of other real estate and repossessed assets	13,277	8,735
Purchases of premises and equipment, net of disposals	(5,074)	(11,250)
Cash Acquired in Excess of Payments to Acquire Business	16,551	0
Net cash used in investing activities	(414,480)	(346,545)
Financing Activities
Net increase in interest- and noninterest-bearing demand deposits and savings accounts	594,058	401,440
Net decrease in time deposits	(126,902)	(91,898)
Net decrease in short-term borrowings	(98,451)	(4,342)
Proceeds from (Repayments of) Other Debt	125,000	0
Cash dividends paid	(26,981)	(21,647)
Proceeds from Issuance of Common Stock	0	76,175
Proceeds from directors’ stock plans and exercise of stock options, net of shares withheld	1,550	1,211
Cash paid for payroll taxes upon conversion of share-based awards	(564)	(701)
Net cash provided by financing activities	467,710	360,238
Net increase in cash and cash equivalents	108,517	71,350
Cash and cash equivalents at beginning of period	183,020	310,788
Cash and cash equivalents at end of period	291,537	382,138
Supplemental Disclosure of Cash Flow Information:
Interest paid	11,655	11,305
Loans transferred to other real estate and repossessed assets	7,411	7,870
Transfer Of Other Real Estate, Closed Branch Offices	455	0
Income Taxes Paid	33,450	19,900
Fair Value of Tangible Assets Acquired	1,283,045	0
Goodwill and Identifiable Intangible Assets Acquired	117,985	0
Liabilities Assumed	1,257,917	0
Stock Issued	$ 159,904	$ 0