Loans and Allowance for Credit Losses - Schedule of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 303,671	$ 107,341
Allowance established for acquired PCD loans	0	78,531
Charge-offs	(18,180)	(4,664)
Recoveries	1,751	1,890
Provision for Loan Losses	11,469	97,409
Balance at End of Period	298,711	280,507
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	120,612	27,232
Allowance established for acquired PCD loans	0	35,040
Charge-offs	(12,423)	(1,880)
Recoveries	283	325
Provision for Loan Losses	17,296	38,754
Balance at End of Period	125,768	99,471
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	138,244	64,004
Allowance established for acquired PCD loans	0	42,601
Charge-offs	(1,189)	(507)
Recoveries	263	182
Provision for Loan Losses	(1,970)	34,210
Balance at End of Period	135,348	140,490
BBCC
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,431	2,458
Allowance established for acquired PCD loans	0	0
Charge-offs	(28)	(28)
Recoveries	73	57
Provision for Loan Losses	(160)	(418)
Balance at End of Period	2,316	2,069
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	21,916	9,347
Allowance established for acquired PCD loans	0	136
Charge-offs	(23)	(185)
Recoveries	72	440
Provision for Loan Losses	(1,758)	7,514
Balance at End of Period	20,207	17,252
Indirect
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	1,532	1,743
Allowance established for acquired PCD loans	0	0
Charge-offs	(1,197)	(483)
Recoveries	412	222
Provision for Loan Losses	687	166
Balance at End of Period	1,434	1,648
Direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	12,116	528
Allowance established for acquired PCD loans	0	31
Charge-offs	(3,238)	(1,530)
Recoveries	581	582
Provision for Loan Losses	(2,693)	14,839
Balance at End of Period	6,766	14,450
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,820	2,029
Allowance established for acquired PCD loans	0	723
Charge-offs	(82)	(51)
Recoveries	67	82
Provision for Loan Losses	67	2,344
Balance at End of Period	$ 6,872	$ 5,127