Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 92,733	$ 35,154	$ 32,423
Initial Allowance on PCD Loans Acquired During the Period	3,046	6,279
Provision for Credit Losses	(9,421)	37,779	10,999
Charge- Offs	(6,098)	(9,842)	(10,559)
Recoveries	3,071	2,251	2,420
TDR Allowance Adjustments	(16)	(114)	(129)
Ending Balance	83,315	92,733	35,154
Provision for credit losses on accrued interest receivable		400
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4,920	1,842	2,233
Initial Allowance on PCD Loans Acquired During the Period	0	87
Provision for Credit Losses	(2,300)	1,399	(421)
Charge- Offs	0	0	0
Recoveries	133	114	31
TDR Allowance Adjustments	(2)	(1)	(1)
Ending Balance	2,751	4,920	1,842
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	9,868	5,361
Initial Allowance on PCD Loans Acquired During the Period	0	1,161
Provision for Credit Losses	(1,289)	3,632
Charge- Offs	0	(310)
Recoveries	0	18
TDR Allowance Adjustments	0	(74)
Ending Balance	8,579	9,868	5,361
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	38,266	7,863
Initial Allowance on PCD Loans Acquired During the Period	1,327	2,236
Provision for Credit Losses	(1,664)	18,966
Charge- Offs	(1,327)	(177)
Recoveries	15	37
TDR Allowance Adjustments	0	0
Ending Balance	36,617	38,266	7,863
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		13,224	11,112
Provision for Credit Losses			1,677
Charge- Offs			(248)
Recoveries			744
TDR Allowance Adjustments			(61)
Ending Balance			13,224
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	17,500	7,667	7,775
Initial Allowance on PCD Loans Acquired During the Period	0	124
Provision for Credit Losses	(5,822)	3,840	(231)
Charge- Offs	(57)	(240)	(152)
Recoveries	1,196	350	338
TDR Allowance Adjustments	(6)	(28)	(63)
Ending Balance	12,811	17,500	7,667
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	18,690	9,716	8,585
Initial Allowance on PCD Loans Acquired During the Period	1,719	2,643
Provision for Credit Losses	2,292	8,329	7,969
Charge- Offs	(3,987)	(7,091)	(7,550)
Recoveries	1,030	1,416	712
TDR Allowance Adjustments	0	0	0
Ending Balance	19,744	18,690	9,716
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,489	2,705	2,718
Initial Allowance on PCD Loans Acquired During the Period	0	28
Provision for Credit Losses	(638)	1,613	2,005
Charge- Offs	(727)	(2,024)	(2,609)
Recoveries	697	316	595
TDR Allowance Adjustments	(8)	(11)	(4)
Ending Balance	2,813	3,489	2,705
Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0
Initial Allowance on PCD Loans Acquired During the Period	0	0
Provision for Credit Losses	0	0
Charge- Offs	0	0
Recoveries	0	0
TDR Allowance Adjustments	0	0
Ending Balance	$ 0	0	0
Impact of Adoption of ASC 326
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		21,226
Ending Balance			21,226
Impact of Adoption of ASC 326 | Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		1,479
Ending Balance			1,479
Impact of Adoption of ASC 326 | Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		80
Ending Balance			80
Impact of Adoption of ASC 326 | Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		9,341
Ending Balance			9,341
Impact of Adoption of ASC 326 | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		5,787
Ending Balance			5,787
Impact of Adoption of ASC 326 | Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		3,677
Ending Balance			3,677
Impact of Adoption of ASC 326 | Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		862
Ending Balance			862
Impact of Adoption of ASC 326 | Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		$ 0
Ending Balance			$ 0