Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for Loan Losses [Roll Forward]
Charge-offs	$ (43,215)
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Charge-offs	(35,789)
Commercial - investor owned
Allowance for Loan Losses [Roll Forward]
Charge-offs	(4,869)
Construction and land development
Allowance for Loan Losses [Roll Forward]
Charge-offs	(9)
Other
Allowance for Loan Losses [Roll Forward]
Charge-offs	(793)
Non-Covered Loans
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	136,932	$ 145,041	$ 136,671
Provision (benefit) for credit losses	35,883	(4,210)	12,993
Initial Allowance on Acquired PCD Loans			7,006
Charge-offs	(43,215)	(9,393)	(17,185)
Recoveries	5,171	5,494	5,556
Balance, end of year	134,771	136,932	145,041
Non-Covered Loans | Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	53,835	63,825	58,812
Provision (benefit) for credit losses	38,308	(6,121)	14,361
Initial Allowance on Acquired PCD Loans			1,077
Charge-offs	(36,302)	(6,082)	(12,113)
Recoveries	3,045	2,213	1,688
Balance, end of year	58,886	53,835	63,825
Non-Covered Loans | Commercial - investor owned
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	36,191	35,877	32,062
Provision (benefit) for credit losses	(335)	46	568
Initial Allowance on Acquired PCD Loans			3,651
Charge-offs	(4,869)	(478)	(2,487)
Recoveries	293	746	2,083
Balance, end of year	31,280	36,191	35,877
Non-Covered Loans | CRE - owner occupied
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	22,752	17,560	17,012
Provision (benefit) for credit losses	523	4,867	(550)
Initial Allowance on Acquired PCD Loans			1,504
Charge-offs	0	(395)	(602)
Recoveries	130	720	196
Balance, end of year	23,405	22,752	17,560
Non-Covered Loans | Construction and land development
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	11,444	14,536	21,413
Provision (benefit) for credit losses	(1,300)	(3,145)	(7,365)
Initial Allowance on Acquired PCD Loans			37
Charge-offs	(9)	0	(3)
Recoveries	63	53	454
Balance, end of year	10,198	11,444	14,536
Non-Covered Loans | Residential real estate
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	7,928	7,927	4,585
Provision (benefit) for credit losses	(2,109)	540	3,900
Initial Allowance on Acquired PCD Loans			0
Charge-offs	(656)	(2,068)	(1,521)
Recoveries	979	1,529	963
Balance, end of year	6,142	7,928	7,927
Non-Covered Loans | Other
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	4,782	5,316	2,787
Provision (benefit) for credit losses	796	(397)	2,079
Initial Allowance on Acquired PCD Loans			737
Charge-offs	(1,379)	(370)	(459)
Recoveries	661	233	172
Balance, end of year	$ 4,860	$ 4,782	$ 5,316