Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income
Interest and fees on loans and leases	$ 50,588	$ 47,137	$ 100,251	$ 95,359
Interest and dividends on investment securities:
Taxable	1,399	2,218	2,702	4,923
Exempt from federal income taxes	48	196	135	436
Interest on deposits with other banks	46	67	102	392
Interest and dividends on other earning assets	360	362	708	889
Total interest income	52,441	49,980	103,898	101,999
Interest expense
Interest on deposits	3,159	4,372	6,559	11,778
Interest on short-term borrowings	3	122	5	228
Interest on long-term debt and subordinated notes	2,522	1,968	5,163	4,007
Total interest expense	5,684	6,462	11,727	16,013
Net interest income	46,757	43,518	92,171	85,986
(Reversal of provision) provision for credit losses	(59)	23,737	(11,342)	45,580
Net interest income after provision for credit losses	46,816	19,781	103,513	40,406
Disaggregation of Revenue [Line Items]
Insurance commission and fee income	3,839	4,067	8,794	8,799
Bank owned life insurance income	1,620	732	2,337	1,466
Net gain on sales of investment securities	54	65	119	760
Net gain on mortgage banking activities	3,461	3,515	9,399	6,259
Other income	479	1,779	1,849	1,846
Noninterest income	20,230	18,000	43,480	36,384
Noninterest expense
Salaries, benefits and commissions	25,396	21,700	50,176	45,536
Net occupancy	2,656	2,478	5,395	5,052
Equipment	968	923	1,914	1,918
Data processing	3,064	2,750	6,114	5,510
Professional fees	2,015	1,264	3,763	2,581
Marketing and advertising	561	535	841	937
Deposit insurance premiums	613	615	1,249	1,119
Intangible expenses	249	321	498	651
Other expense	5,764	5,374	10,876	11,433
Total noninterest expense	41,286	35,960	80,826	74,737
Income before income taxes	25,760	1,821	66,167	2,053
Income tax expense (benefit)	4,885	(264)	12,689	(870)
Net income	$ 20,875	$ 2,085	$ 53,478	$ 2,923
Net income per share:
Basic (in dollars per share)	$ 0.71	$ 0.07	$ 1.82	$ 0.10
Diluted (in dollars per share)	$ 0.71	$ 0.07	$ 1.81	$ 0.10
Trust fee income
Disaggregation of Revenue [Line Items]
Noninterest income	$ 2,157	$ 1,924	$ 4,191	$ 3,814
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Noninterest income	1,314	890	2,596	2,287
Investment advisory commission and fee income
Disaggregation of Revenue [Line Items]
Noninterest income	4,558	3,540	9,255	7,795
Other service fee income
Disaggregation of Revenue [Line Items]
Noninterest income	$ 2,748	$ 1,488	$ 4,940	$ 3,358