CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest income:
Interest and fees on loans	$ 106,560	$ 79,167	$ 288,721	$ 239,028
Interest on loans held for sale	398	572	1,094	1,145
Interest on deposits with banks	84	783	419	1,405
Interest and dividends on investment securities:
Taxable for federal income taxes	4,488	5,221	17,270	16,302
Exempt from federal income taxes	1,454	1,337	4,264	4,591
Interest on federal funds sold	0	2	1	8
Total interest income	112,984	87,082	311,769	262,479
Interest expense:
Interest on deposits	9,439	16,332	35,241	46,958
Interest on retail repurchase agreements and federal funds purchased	551	257	1,731	945
Interest on advances from FHLB	2,841	3,222	3,863	13,389
Interest on subordinated debt	2,669	481	7,602	1,462
Total interest expense	15,500	20,292	48,437	62,754
Net interest income	97,484	66,790	263,332	199,725
Provision for credit losses	7,003	1,524	90,158	3,029
Net interest income after provision for credit losses	90,481	65,266	173,174	196,696
Investment securities gains	51	15	432	20
Insurance agency commissions	2,122	2,116	5,439	5,281
Income from bank owned life insurance	708	662	2,162	2,505
Other income	1,418	1,901	5,276	6,037
Total non-interest income	29,390	18,573	70,482	52,098
Non-interest expense:
Salaries and employee benefits	36,041	26,234	98,391	77,699
Occupancy expense of premises	5,575	4,816	16,147	14,807
Equipment expense	3,133	2,641	9,103	7,929
Marketing	1,305	1,541	3,223	3,371
Outside data services	2,614	1,973	6,365	5,713
FDIC insurance	1,340	(83)	3,200	2,137
Amortization of intangible assets	1,968	491	4,566	1,465
Merger and acquisition expense	1,263	364	25,171	364
Professional fees and services	1,800	1,546	5,466	4,425
Other expenses	5,898	5,402	22,489	15,094
Total non-interest expense	60,937	44,925	194,121	133,004
Income before income taxes	58,934	38,914	49,535	115,790
Income tax expense	14,292	9,531	9,244	27,814
Net income	$ 44,642	$ 29,383	$ 40,291	$ 87,976
Per share information:
Basic net income per common share (in dollars per share)	$ 0.94	$ 0.82	$ 0.93	$ 2.46
Diluted net income per common share (in dollars per share)	0.94	0.82	0.93	2.45
Dividends declared per share (in dollars per share)	$ 0.30	$ 0.30	$ 0.90	$ 0.88
Service charges on deposit accounts
Fees and Commissions, Mortgage Banking and Servicing	$ 1,673	$ 2,516	$ 5,149	$ 7,265
Mortgage banking activities
Fees and Commissions, Mortgage Banking and Servicing	14,108	4,408	25,567	10,541
Wealth management income
Fees and Commissions, Mortgage Banking and Servicing	7,785	5,493	22,355	16,268
Bank card fees
Fees and Commissions, Mortgage Banking and Servicing	$ 1,525	$ 1,462	$ 4,102	$ 4,181