Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income
Loans	$ 118,101	$ 87,505	$ 345,286	$ 252,486
Investment securities	10,667	9,629	31,678	27,550
Other short-term investments	1,148	772	3,167	1,968
Total interest income	129,916	97,906	380,131	282,004
Interest Expense
Deposits	4,369	2,520	11,307	7,387
Borrowed funds	2,544	1,782	6,837	4,597
Senior and subordinated debt	3,110	2,632	9,314	8,353
Total interest expense	10,023	6,934	27,458	20,337
Net interest income	119,893	90,972	352,673	261,667
Provision for loan losses	10,109	9,998	23,266	25,676
Net interest income after provision for loan losses	109,784	80,974	329,407	235,991
Noninterest Income
Service charges on deposit accounts	12,561	10,708	36,079	30,350
Wealth management fees	10,169	8,495	30,354	24,696
Card-based fees	5,992	7,332	22,940	21,642
Capital market products income	2,592	2,916	6,185	8,197
Mortgage banking income	2,246	3,394	5,779	6,625
Other service charges, commissions, and fees	4,745	5,621	16,043	16,484
Net gain on sale-leaseback transaction	0	5,509	0	5,509
Net securities gains	3,197	187	3,481	1,097
Other income	1,846	1,691	7,383	5,001
Total noninterest income	43,348	45,853	128,244	119,601
Noninterest Expense
Salaries and employee benefits	55,638	46,372	165,985	137,233
Net occupancy and equipment expense	12,115	10,755	36,925	30,380
Professional services	8,498	6,772	26,073	17,984
Technology and related costs	4,505	3,881	13,423	11,251
Net OREO expense	657	313	3,988	2,099
Other expenses	15,393	13,623	47,066	41,074
Acquisition and integration related expenses	384	1,172	20,123	6,810
Total noninterest expense	97,190	82,888	313,583	246,831
Income before income tax expense	55,942	43,939	144,068	108,761
Income tax expense	17,707	15,537	48,028	37,130
Net income	$ 38,235	$ 28,402	$ 96,040	$ 71,631
Per Common Share Data
Basic earnings per common share (in dollars per share)	$ 0.37	$ 0.35	$ 0.94	$ 0.89
Diluted earnings per common share (in dollars per share)	0.37	0.35	0.94	0.89
Dividends declared per common share (in dollars per share)	$ 0.10	$ 0.09	$ 0.29	$ 0.27
Weighted-average common shares outstanding (in Shares)	101,752	80,396	101,307	79,589
Weighted-average diluted common shares outstanding (in Shares)	101,772	80,409	101,327	79,602