Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Interest and fees on loans	$ 50,450	$ 39,926
Interest on debt securities:
Taxable	3,987	3,230
Nontaxable	282	386
Interest on interest-bearing deposits	240	130
Dividends on equity securities	205	68
Total interest income	55,164	43,740
Interest expense:
Interest-bearing transaction accounts	806	675
Money market accounts	3,353	1,493
Savings accounts	125	82
Certificates of deposit	1,899	1,215
Subordinated debentures and notes	1,368	1,164
Federal Home Loan Bank advances	1,258	330
Notes payable and other borrowings	184	139
Total interest expense	8,993	5,098
Net interest income	46,171	38,642
Provision for portfolio loan losses	1,871	1,533
Provision reversal for purchased credit impaired loan losses	0	(148)
Net interest income after provision for loan losses	44,300	37,257
Noninterest income:
Service charges on deposit accounts	2,851	2,510
Wealth management revenue	2,114	1,833
Fees and Commissions, Credit and Debit Cards	1,516	1,037
Gain on state tax credits, net	252	246
Gain on sale of investment securities	9	0
Miscellaneous income	2,800	1,350
Total noninterest income	9,542	6,976
Noninterest expense:
Employee compensation and benefits	16,491	15,208
Occupancy	2,406	1,929
Data processing	1,467	1,633
Professional fees	849	837
FDIC and other insurance	917	824
Loan legal and other real estate expense	299	345
Merger related expenses	0	1,667
Other	6,714	4,293
Total noninterest expense	29,143	26,736
Income before income tax expense	24,699	17,497
Income tax expense	3,778	5,106
Net income	$ 20,921	$ 12,391
Earnings per common share
Basic (usd per share)	$ 0.91	$ 0.57
Diluted (usd per share)	$ 0.90	$ 0.56