Noninterest Income and Expense - Summary of Noninterest Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Noninterest Income [Abstract]
Interchange income	$ 4,131	$ 3,682	$ 12,096	$ 10,115
Marine finance fees	152	242	518	545
SBA gains	812	252	1,331	572
BOLI income	1,128	899	2,859	2,672
Other income	5,228	2,370	11,221	7,869
Noninterest income, gross	19,058	16,942	52,220	45,387
Securities (losses) gains, net	(30)	4	(199)	1,253
Total Noninterest Income (Note I – Noninterest Income and Expense)	19,028	16,946	52,021	46,640
Noninterest expense
Salaries and wages	27,919	23,125	72,278	67,049
Employee benefits	4,177	3,995	13,110	11,629
Outsourced data processing costs	5,610	6,128	14,754	14,820
Telephone/data lines	810	705	2,433	2,210
Occupancy	3,541	3,858	10,640	10,596
Furniture and equipment	1,567	1,576	3,987	4,557
Marketing	1,353	1,513	3,523	3,788
Legal and professional fees	4,151	3,018	8,915	8,658
FDIC assessments	651	474	1,692	740
Amortization of intangibles	1,306	1,497	3,729	4,436
Foreclosed property expense and net (gain) loss on sale	66	512	(89)	442
Provision for credit losses on unfunded commitments	133	756	133	980
Other	3,984	4,517	12,067	11,966
Total	55,268	51,674	147,172	141,871
Service charges on deposit accounts
Noninterest Income [Abstract]
Revenue from contracts with customers	2,495	2,242	7,171	7,006
Wealth management income
Noninterest Income [Abstract]
Revenue from contracts with customers	2,562	1,972	7,272	5,558
Mortgage banking fees
Noninterest Income [Abstract]
Revenue from contracts with customers	$ 2,550	$ 5,283	$ 9,752	$ 11,050