Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest Income
Loans	$ 157,680	$ 127,737	$ 302,484	$ 246,423
Investment securities	18,005	13,010	34,011	24,766
Other short-term investments	1,997	1,341	3,677	2,244
Total interest income	177,682	142,088	340,172	273,433
Interest Expense
Deposits	19,316	8,032	35,918	14,211
Borrowed funds	4,459	3,513	8,010	6,992
Senior and subordinated debt	3,595	3,140	6,908	6,264
Total interest expense	27,370	14,685	50,836	27,467
Net interest income	150,312	127,403	289,336	245,966
Provision for loan losses	11,491	11,614	21,935	26,795
Net interest income after provision for loan losses	138,821	115,789	267,401	219,171
Noninterest Income
Service charges on deposit accounts	12,196	12,058	23,736	23,710
Wealth management fees	12,190	10,981	23,790	21,939
Card-based fees	4,549	4,394	8,927	8,327
Capital market products income	2,154	2,819	3,433	4,377
Mortgage banking income	1,901	1,736	2,905	4,133
Other service charges, commissions, and fees	2,783	2,838	5,394	5,386
Other income	2,753	2,121	5,247	4,592
Total noninterest income	38,526	36,947	73,432	72,464
Noninterest Expense
Salaries and employee benefits	58,692	57,932	116,065	114,719
Net occupancy and equipment expense	13,671	13,651	28,441	27,424
Professional services	10,467	8,298	18,255	15,878
Technology and related costs	4,908	4,837	9,504	9,608
Net OREO expense	294	(256)	975	812
Other expenses	16,154	13,939	29,107	25,542
Delivering Excellence implementation costs	442	15,015	700	15,015
Acquisition and integration related expenses	9,514	0	13,205	0
Total noninterest expense	114,142	113,416	216,252	208,998
Income before income tax expense	63,205	39,320	124,581	82,637
Income tax expense	16,191	9,720	31,509	19,527
Net income	$ 47,014	$ 29,600	$ 93,072	$ 63,110
Per Common Share Data
Basic earnings per common share (in dollars per share)	$ 0.43	$ 0.29	$ 0.86	$ 0.61
Diluted earnings per common share (in dollars per share)	0.43	0.29	0.86	0.61
Dividends declared per common share (in dollars per share)	$ 0.14	$ 0.11	$ 0.26	$ 0.22
Weighted-average common shares outstanding (in Shares)	108,467	102,159	107,126	102,041
Weighted-average diluted common shares outstanding (in Shares)	108,467	102,159	107,126	102,049