Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 148,931	$ 113,895	$ 113,895
Allowance on PCD Loans Acquired During the Period		13,335
Provision for Credit Losses	1,368	31,598
Charge- Offs	(4,628)	(3,605)	(24,795)
Recoveries	998	417
Ending Balance	146,669	155,640	148,931
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,637	6,464	6,464
Allowance on PCD Loans Acquired During the Period		5
Provision for Credit Losses	(1,640)	69
Charge- Offs	0	0	0
Recoveries	4	2
Ending Balance	7,001	6,540	8,637
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,529	6,051	6,051
Allowance on PCD Loans Acquired During the Period		139
Provision for Credit Losses	4,484	101
Charge- Offs	0	0	0
Recoveries	4	1
Ending Balance	10,017	6,292	5,529
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	48,288	43,258	43,258
Allowance on PCD Loans Acquired During the Period		647
Provision for Credit Losses	(1,621)	9,715
Charge- Offs	(84)	(109)	(120)
Recoveries	18	64
Ending Balance	46,601	53,575	48,288
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	39,016	29,605	29,605
Allowance on PCD Loans Acquired During the Period		400
Provision for Credit Losses	(631)	9,898
Charge- Offs	0	(159)	(356)
Recoveries	243	150
Ending Balance	38,628	39,894	39,016
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	34,343	15,648	15,648
Allowance on PCD Loans Acquired During the Period		11,983
Provision for Credit Losses	(1,501)	6,414
Charge- Offs	(2,656)	(2,642)	(18,565)
Recoveries	521	190
Ending Balance	30,707	31,593	34,343
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	13,118	12,869	12,869
Allowance on PCD Loans Acquired During the Period		161
Provision for Credit Losses	2,277	5,401
Charge- Offs	(1,888)	(695)	(5,754)
Recoveries	208	10
Ending Balance	$ 13,715	$ 17,746	$ 13,118