Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income:
Interest and fees on loans	$ 73,895	$ 62,634	$ 137,624	$ 125,450
Interest and dividends on investment securities:
Taxable	9,783	7,982	18,505	16,020
Exempt from federal taxes	855	858	1,647	1,737
Interest on deposits in banks	1,333	482	2,545	1,127
Interest on federal funds sold	3	3	5	5
Total interest income	85,869	71,959	160,326	144,339
Interest expense:
Interest on deposits	5,011	3,108	9,129	6,336
Interest on securities sold under repurchase agreements	272	92	520	182
Interest on long-term debt	481	451	934	900
Interest on subordinated debentures held by subsidiary trusts	782	675	1,527	1,338
Total interest expense	6,546	4,326	12,110	8,756
Net interest income	79,323	67,633	148,216	135,583
Provision for loan losses	2,355	2,550	4,085	6,550
Net interest income after provision for loan losses	76,968	65,083	144,131	129,033
Non-interest income:
Payment services revenues	10,225	8,648	18,670	16,639
Income from the origination and sale of loans	7,643	9,409	14,191	15,550
Investment Advisory, Management and Administrative Fees	5,084	5,166	10,097	9,741
Service charges on deposit accounts	5,060	4,626	9,410	9,089
Other service charges, commissions and fees	3,358	2,845	6,034	5,453
Investment securities gains, net	5	108	7	87
Other income	5,805	2,457	7,878	4,750
Non-recurring litigation recovery	0	3,750	0	3,750
Total non-interest income	37,180	37,009	66,287	65,059
Non-interest expense:
Salaries and wages	28,037	26,707	53,778	51,389
Employee benefits	9,811	8,066	19,427	17,675
Outsourced technology services	6,000	4,800	11,300	9,632
Occupancy, net	5,180	4,284	9,969	8,948
Furniture and equipment	2,739	2,460	5,012	4,716
OREO expense, net of income	34	140	(14)	101
Professional fees	1,795	1,136	2,824	2,444
FDIC insurance premiums	786	1,198	1,661	2,456
Mortgage servicing rights amortization	707	722	1,319	1,356
Mortgage servicing rights impairment recovery	(2)	(20)	(72)	(5)
Core deposit intangibles amortization	1,062	827	1,692	1,654
Other expenses	14,117	12,575	26,358	24,198
Non-core acquisition expenses	10,133	0	10,838	0
Total non-interest expense	80,399	62,895	144,092	124,564
Income before income tax expense	33,749	39,197	66,326	69,528
Income tax expense	11,881	13,643	21,332	23,850
Net income	$ 21,868	$ 25,554	$ 44,994	$ 45,678
Basic earnings per common share	$ 0.46	$ 0.58	$ 0.97	$ 1.03
Diluted earnings per common share	$ 0.45	$ 0.57	$ 0.96	$ 1.02