Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 209,381	$ 91,311
Money market and other interest-earning investments	46,138	128,507
Total cash and cash equivalents	255,519	219,818
Trading securities, at fair value	4,982	3,941
Investment securities - available-for-sale, at fair value	2,797,174	2,418,221
Investment securities - held-to-maturity, at amortized cost (fair value $784,172 and $929,417, respectively)	745,090	872,111
Federal Home Loan Bank/Federal Reserve Bank stock, at cost	101,716	86,146
Loans held for sale, at fair value	90,682	13,810
Loans, net of unearned income	9,010,512	6,840,818
Covered loans, net of discount		107,587
Total loans	9,010,512	6,948,405
Allowance for loan losses	(49,808)	(51,296)
Allowance for loan losses - covered loans		(937)
Net loans	8,960,704	6,896,172
FDIC indemnification asset		9,030
Premises and equipment, net	429,622	196,676
Accrued interest receivable	81,381	69,098
Goodwill	655,018	584,634
Other intangible assets	37,677	35,308
Company-owned life insurance	352,956	341,294
Net deferred tax assets	181,863	109,984
Loan servicing rights	25,561	10,468
Assets held for sale	5,970	5,679
Other real estate owned and repossessed personal property	18,546	7,594
Other real estate owned - covered		4,904
Other assets	115,776	106,639
Total assets	14,860,237	11,991,527
Deposits:
Noninterest-bearing demand	3,016,093	2,488,855
Interest-bearing:
NOW	2,596,595	2,133,536
Savings	2,954,709	2,201,352
Money market	707,748	577,050
Time	1,468,108	1,000,067
Total deposits	10,743,253	8,400,860
Federal funds purchased and interbank borrowings	213,003	291,090
Securities sold under agreements to repurchase	367,052	387,409
Federal Home Loan Bank advances	1,353,092	1,023,491
Other borrowings	218,939	218,256
Accrued expenses and other liabilities	150,481	179,251
Total liabilities	13,045,820	10,500,357
Commitments and contingencies (Note 23)
Shareholders' Equity
Preferred stock, series A, 2,000 shares authorized, no shares issued or outstanding
Common stock, $1.00 per share stated value, 300,000 shares authorized, 135,159 and 114,297 shares issued and outstanding, respectively	135,159	114,297
Capital surplus	1,348,338	1,087,911
Retained earnings	390,292	323,759
Accumulated other comprehensive income (loss), net of tax	(59,372)	(34,797)
Total shareholders' equity	1,814,417	1,491,170
Total liabilities and shareholders' equity	$ 14,860,237	$ 11,991,527