Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans	$ 9,978,052	$ 10,062,940
Nonaccrual	77,205	65,104
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,121,609	3,227,169
Nonaccrual	26,083	14,256
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	242,679	264,317
Nonaccrual	24,485	25,976
Current
Financing Receivable, Past Due [Line Items]
Loans	9,871,344	9,967,309
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,082,940	3,192,780
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	215,293	237,328
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	22,088	25,257
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	9,147	17,363
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,233	682
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,455	4,091
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,978	1,964
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	665	177
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1,960	1,179
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,461	806
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3	154
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	623,246	767,622
Nonaccrual	892	824
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	168,116	247,654
Nonaccrual	756	800
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	539	542
Nonaccrual	98	0
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	166,889	245,674
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	441	442
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	471	891
Construction and land development | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	100
Construction and land development | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	289
Construction and land development | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,656,130	1,670,281
Nonaccrual	11,222	9,684
Commercial real estate - owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	532,259	552,627
Nonaccrual	2,519	5,429
Commercial real estate - owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	35,785	38,021
Nonaccrual	5,370	3,354
Commercial real estate - owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	528,431	545,374
Commercial real estate - owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	29,431	34,667
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	488	1,691
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	984	0
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	821	133
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	3,368,339	3,319,890
Nonaccrual	21,187	8,735
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,293,008	1,323,222
Nonaccrual	14,133	1,545
Commercial real estate - non-owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	140,912	152,080
Nonaccrual	3,728	3,772
Commercial real estate - non-owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,274,008	1,310,100
Commercial real estate - non-owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	137,184	148,308
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	4,867	11,577
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	2,521,399	2,445,692
Nonaccrual	11,725	9,986
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	745,349	710,129
Nonaccrual	3,220	2,085
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,814	20,815
Nonaccrual	1,051	1,072
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	739,085	704,417
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	17,891	18,923
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,227	2,586
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	254	497
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	649	888
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	618	169
Residential real estate | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	168	153
Residential real estate | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	154
Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,566,199	1,607,888
Nonaccrual	30,791	34,693
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	305,200	318,683
Nonaccrual	4,459	3,333
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	44,954	52,115
Nonaccrual	14,238	17,778
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	300,642	315,229
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	29,723	34,337
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	64	50
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	990	0
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	36
Commercial and financial | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	35	35
Commercial and financial | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	242,739	251,567
Nonaccrual	1,388	1,182
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	77,677	74,854
Nonaccrual	996	1,064
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	675	744
Nonaccrual	0	0
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	73,885	71,986
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	623	651
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,030	568
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	5	85
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	508	618
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	47	8
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,258	618
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	6,613,764	6,571,454
Nonaccrual	26,637	24,872
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	6,573,111	6,537,201
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	10,708	7,212
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,812	1,950
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	496	219
Portfolio Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	454,591	519,426
Nonaccrual	38	24
Portfolio Loans | Construction and land development | Current
Financing Receivable, Past Due [Line Items]
Loans	454,468	519,383
Portfolio Loans | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	85	19
Portfolio Loans | Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,088,086	1,079,633
Nonaccrual	3,333	901
Portfolio Loans | Commercial real estate - owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,083,721	1,078,732
Portfolio Loans | Commercial real estate - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	512	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	520	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,934,419	1,844,588
Nonaccrual	3,326	3,418
Portfolio Loans | Commercial real estate - non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,931,093	1,840,485
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	685
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	1,756,236	1,714,748
Nonaccrual	7,454	6,829
Portfolio Loans | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,741,619	1,701,862
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,314	4,373
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,433	1,515
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	416	169
Portfolio Loans | Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,216,045	1,237,090
Nonaccrual	12,094	13,582
Portfolio Loans | Commercial and financial | Current
Financing Receivable, Past Due [Line Items]
Loans	1,199,204	1,221,941
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,026	1,372
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	686	145
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	35	50
Portfolio Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans	164,387	175,969
Nonaccrual	392	118
Portfolio Loans | Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	163,006	174,798
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	771	763
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	173	290
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	$ 45	$ 0