LHFI and ACL, LHFI - Additional Information (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Region	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accrued interest receivable	$ 50,700	$ 26,700
Maximum concentration of loan as a percentage of total LHFI	10.00%
Key market regions | Region	5
Loans and Leases Receivable, Related Parties, Ending Balance	$ 47,000	26,300
New loan advances to related party	298,900
Loan repayment by related party	278,000
Decrease in loans due to changes in executive officers and directors	139
LHFI classified as TDRs	10,200	21,600	$ 25,800
LHFI classified as TDRs from bankruptcies, payment concessions, credits with interest-only payments and credits renewed at a rate that was not commensurate with that of new debt with similar risk	9,700	18,200	17,700
Unused commitments on TDRs	9,000	1,000	4,500
Financing receivable, related allowance	203	1,500	2,400
Financing receivable, related charge-offs	$ 511	$ 3,700	$ 2,300