CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest income:
Interest and fees on loans	$ 71,789	$ 60,960
Interest and dividends on investment securities:
Taxable interest income	10,184	5,990
Non-taxable interest income	1,076	1,260
Other interest income	1,232	423
Total interest income	84,281	68,633
Interest expense:
Deposits	12,500	5,987
Federal funds purchased and securities sold under agreements to repurchase	583	341
Short-term borrowings	191	476
Long-term debt	579	164
Senior notes	400	400
Subordinated notes	731	793
Junior subordinated debt owed to unconsolidated trusts	914	715
Total interest expense	15,898	8,876
Net interest income	68,383	59,757
Provision for loan losses	2,111	1,008
Net interest income after provision for loan losses	66,272	58,749
Non-interest income:
Mortgage revenue	1,945	1,643
Security gains, net	42
Other income	3,052	1,895
Total non-interest income	25,945	22,486
Non-interest expense:
Salaries, wages and employee benefits	32,341	28,819
Net occupancy expense of premises	4,202	3,821
Furniture and equipment expenses	2,095	1,913
Data processing	4,401	4,345
Amortization of intangible assets	2,094	1,515
Other expense	12,030	10,627
Total non-interest expense	57,163	51,040
Income before income taxes	35,054	30,195
Income taxes	9,585	8,278
Net income	$ 25,469	$ 21,917
Basic earnings per common share (in dollars per share)	$ 0.48	$ 0.45
Diluted earnings per common share (in dollars per share)	0.48	0.45
Dividends declared per share of common stock (in dollars per share)	$ 0.21	$ 0.20
Trust fees
Non-interest income:
Non-interest income	$ 8,115	$ 7,514
Commissions and brokers fees, net
Non-interest income:
Non-interest income	914	1,096
Remittance processing
Non-interest income:
Non-interest income	3,780	3,392
Fees for customer services
Non-interest income:
Non-interest income	$ 8,097	$ 6,946