Discontinued Operations - Summary of the Operating Results of the Discontinued Insurance Agency Business (Details) - Insurance Agency Business - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Discontinued Operations, Held-for-Sale
Noninterest income:
Insurance commissions	$ 25,897	$ 23,926	$ 85,177	$ 77,511
Other noninterest income	13	41	51	137
Total noninterest (loss) income	25,910	23,967	85,228	77,648
Noninterest expense:
Salaries and employee benefits	24,655	16,768	57,991	49,057
Office occupancy and equipment	2,755	823	4,279	2,401
Data processing	1,013	1,052	3,216	3,248
Professional services	1,291	549	2,615	738
Marketing expenses	53	101	152	182
Amortization of intangible assets	665	734	2,002	1,868
Other	1,514	1,186	3,976	3,613
Total noninterest expense	31,946	21,213	74,231	61,107
(Loss) income from discontinued operations before income tax expense	(6,036)	2,754	10,997	16,541
Income tax (benefit) expense	(1,685)	785	3,125	4,669
(Loss) income from discontinued operations, net of taxes	(4,351)	1,969	7,872	11,872
Disposal Group, Not Discontinued Operations, Transferrable Upon Sale to Entity
Noninterest income:
(Losses) income from investments held in rabbi trusts	(91)	(266)	489	(1,634)
Other noninterest income	15	14	44	40
Total noninterest (loss) income	(76)	(252)	533	(1,594)
Noninterest expense:
Salaries and employee benefits	(96)	(268)	484	(1,616)
Office occupancy and equipment	102	125	343	375
Other	474	129	1,468	320
Total noninterest expense	480	(14)	2,295	(921)
(Loss) income from discontinued operations before income tax expense	(556)	(238)	(1,762)	(673)
Income tax (benefit) expense	(156)	(67)	(495)	(189)
(Loss) income from discontinued operations, net of taxes	$ (400)	$ (171)	$ (1,267)	$ (484)