Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities
Net income	$ 48,969	$ 36,859
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,500	3,000
Gains on sales of loans	(3,431)	(3,375)
Proceeds from sales of loans	119,845	119,683
Loans originated for sale	(120,077)	(111,903)
Net gains from sales/writedowns of other real estate and repossessed assets	(2,512)	(1,578)
Depreciation of premises and equipment	5,562	5,239
Amortization of intangible assets	4,751	3,787
Net gains on sale of investment securities	(37)	(607)
Net amortization of premiums and discounts on investment securities	2,891	2,759
Share-based compensation expense	1,780	1,461
Net increase in interest receivable and other assets	(13,642)	(11,695)
Net decrease in interest payable and other liabilities	(4,139)	(15,727)
Net cash provided by operating activities	44,460	27,903
Investment securities – available-for-sale:
Proceeds from sales	0	13,173
Proceeds from maturities, calls and principal reductions	99,528	113,973
Investment securities – held-to-maturity:
Proceeds from maturities, calls and principal reductions	57,518	54,481
Purchases	(101,295)	(205,286)
Net increase in loans	(385,814)	(250,997)
Proceeds from sales of other real estate and repossessed assets	7,377	7,934
Purchases of premises and equipment, net of disposals	(3,897)	(3,333)
Cash acquired, net of cash paid, in business combinations	0	16,551
Net cash used in investing activities	(326,583)	(253,504)
Financing Activities
Net increase in interest- and noninterest-bearing demand deposits and savings accounts	95,263	217,719
Net decrease in time deposits	(87,384)	(72,795)
Net increase in securities sold under agreements to repurchase with customers and other short-term borrowings	159,014	103,824
Proceeds from long-term borrowings	150,000	25,000
Repayment of long-term borrowings	(20,558)	0
Cash dividends paid	(19,942)	(17,049)
Proceeds from directors’ stock plans and exercise of stock options, net of shares withheld	653	1,462
Cash paid for payroll taxes upon conversion of share-based awards	(752)	(546)
Net cash provided by financing activities	276,294	257,615
Net increase (decrease) in cash and cash equivalents	(5,829)	32,014
Cash and cash equivalents at beginning of period	238,789	183,020
Cash and cash equivalents at end of period	232,960	215,034
Supplemental Disclosure of Cash Flow Information:
Interest paid	10,764	6,592
Loans transferred to other real estate and repossessed assets	3,370	5,908
Closed branch offices transferred to other real estate	1,863	359
Federal income taxes paid	11,700	20,800
Fair value of tangible assets acquired (non-cash)	0	1,284,552
Goodwill and identifiable intangible assets acquired	0	116,478
Liabilities assumed	0	1,257,917
Common stock issued	$ 0	$ 159,904