Noninterest Income and Expense - Summary of Noninterest Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Noninterest Income [Abstract]
Interchange income	$ 3,820	$ 3,246
Marine finance fees	189	146
SBA gains	287	139
BOLI income	859	886
Other income	3,744	3,352
Noninterest income, gross	17,785	14,669
Securities (losses) gains, net	(114)	19
Total Noninterest Income (Note I – Noninterest Income and Expense)	17,671	14,688
Noninterest expense
Salaries and wages	21,393	23,698
Employee benefits	4,980	4,255
Outsourced data processing costs	4,468	4,633
Telephone/data lines	785	714
Occupancy	3,789	3,353
Furniture and equipment	1,254	1,623
Marketing	1,168	1,278
Legal and professional fees	2,582	3,363
FDIC assessments	526	0
Amortization of intangibles	1,211	1,456
Foreclosed property expense and net gain on sale	(65)	(315)
Provision for credit losses on unfunded commitments	0	46
Other	4,029	3,694
Total	46,120	47,798
Service charges on deposit accounts
Noninterest Income [Abstract]
Revenue from contracts with customers	2,338	2,825
Wealth management income
Noninterest Income [Abstract]
Revenue from contracts with customers	2,323	1,867
Mortgage banking fees
Noninterest Income [Abstract]
Revenue from contracts with customers	$ 4,225	$ 2,208