Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 28,336,244	$ 13,601,846
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	178,946	70,984
Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	23,804	15,147
Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	4,017	4,399
Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,500	2,906
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	10,388	6,975
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	8,624,253	3,391,769
Commercial | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	13,539	8,100
Commercial | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	23,217	13,816
Commercial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,052	3,394
Commercial | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	805	80
Commercial | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,716	302
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	11,337,735	6,380,674
Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	119,136	38,657
Commercial real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Commercial real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	939	961
Commercial real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Commercial real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,638	6,653
BBCC | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,509	1,895
BBCC | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	587	1,331
BBCC | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	26	43
BBCC | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	93	93
BBCC | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	5,706,155	2,255,289
Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	31,436	18,360
Residential real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	906,526	873,139
Indirect | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,387	2,581
Indirect | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	680,690	140,385
Direct | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	560	724
Direct | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Direct | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	1
Direct | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	215	152
Direct | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	34	20
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,080,885	560,590
Home equity | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	12,766	3,248
Home equity | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 0	$ 0