Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and Dividend Income
Loans, including fees	$ 179,266	$ 165,569	$ 348,242	$ 329,560
Mortgage loans held for sale, including fees	1,248	1,850	2,219	3,251
Investment securities:
Taxable interest	20,246	12,994	38,110	26,542
Tax-exempt interest	2,060	1,670	4,124	3,334
Amortization of FDIC loss share receivable	0	(4,163)	0	(8,549)
Other	1,755	774	4,413	1,492
Total interest and dividend income	204,575	178,694	397,108	355,630
Deposits:
NOW and MMDA	12,207	7,310	23,306	14,668
Savings	329	297	649	519
Time deposits	4,576	4,309	9,214	8,663
Short-term borrowings	227	662	504	1,147
Long-term debt	3,593	3,363	6,974	6,477
Total interest expense	20,932	15,941	40,647	31,474
Net interest income	183,643	162,753	356,461	324,156
Provision for loan losses	12,050	11,866	18,204	26,771
Net interest income after provision for loan losses	171,593	150,887	338,257	297,385
Non-interest Income
Mortgage income	19,730	25,991	33,845	45,931
Service charges on deposit accounts	11,410	10,940	22,563	21,891
Title revenue	6,190	6,135	10,931	10,880
Broker commissions	2,744	3,712	5,482	7,535
ATM/debit card fee income	3,800	3,650	7,385	7,153
Credit card and merchant-related income	3,519	2,732	6,746	5,387
Income from bank owned life insurance	1,241	1,411	2,552	2,613
Gain on sale of available for sale securities	59	1,789	59	1,985
Other non-interest income	7,273	8,557	13,749	17,387
Total non-interest income	55,966	64,917	103,312	120,762
Non-interest Expense
Salaries and employee benefits	86,317	85,105	168,170	165,847
Net occupancy and equipment	16,292	16,813	32,313	33,720
Communication and delivery	2,956	3,281	6,000	6,340
Marketing and business development	3,238	3,142	6,662	6,644
Data processing	7,306	6,101	14,247	12,019
Professional services	11,219	4,939	16,553	8,719
Credit and other loan related expense	3,780	2,931	8,306	5,602
Insurance	4,486	4,449	9,016	8,633
Travel and entertainment	2,753	1,938	5,237	4,321
Other non-interest expense	9,161	10,805	22,022	25,111
Total non-interest expense	147,508	139,504	288,526	276,956
Income before income tax expense	80,051	76,300	153,043	141,191
Income tax expense	28,033	25,490	50,552	47,612
Net Income	52,018	50,810	102,491	93,579
Preferred stock dividends	(949)	(854)	(4,548)	(3,430)
Net Income Available to Common Shareholders	51,069	49,956	97,943	90,149
Earnings allocated to unvested restricted stock	(361)	(540)	(707)	(1,003)
Earnings allocated to common shareholders	$ 50,708	$ 49,416	$ 97,236	$ 89,146
Earnings per common share - Basic (in usd per share)	$ 1.00	$ 1.21	$ 2.01	$ 2.19
Earnings per common share - Diluted (in usd per share)	0.99	1.21	1.99	2.18
Cash dividends declared per common share (in usd per share)	$ 0.36	$ 0.34	$ 0.72	$ 0.68
Comprehensive Income
Net income	$ 52,018	$ 50,810	$ 102,491	$ 93,579
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period (net of tax effects of $4,537, $5,313, $6,958, and $19,015, respectively)	8,426	9,867	12,922	35,314
Reclassification adjustment for gains included in net income (net of tax effects of $21, $626, $21, and $695, respectively)	(38)	(1,163)	(38)	(1,290)
Unrealized gains (losses) on securities, net of tax	8,388	8,704	12,884	34,024
Fair value of derivative instruments designated as cash flow hedges:
Change in fair value of derivative instruments designated as cash flow hedges during the period (net of tax effects of $426, $1,252, $338, and $3,475, respectively)	(790)	(2,328)	(627)	(6,455)
Reclassification adjustment for gains included in net income (net of tax effects of $55, $0, $80, and $0, respectively)	(103)	0	(148)	0
Fair value of derivative instruments designated as cash flow hedges, net of tax	(893)	(2,328)	(775)	(6,455)
Other comprehensive income (loss), net of tax	7,495	6,376	12,109	27,569
Comprehensive income	$ 59,513	$ 57,186	$ 114,600	$ 121,148