LHFI and ACL, LHFI - Troubled debt restructurings on financial effect (Details) - Troubled Debt Restructurings [Member]	12 Months Ended
	Dec. 31, 2023
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Financial Effect	One loan renewed and extended maturity by six months
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured By Real Estate [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Financial Effect	Extended amortization with term adjusted by weighted-average 3.4 years
Weighted average amortization period	3 years 4 months 24 days
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Financial Effect	Modifed lines of credit to amortize over 12 month and 24 month terms
Commercial and Industrial Loans [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Payment Concessions	Six month payment deferrals
Consumer Loans [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Financial Effect	Bankruptcies extended amortization with term adjusted by weighted average 1.3 years reducing borrower payment
Weighted average amortization period	1 year 3 months 18 days
Other Commercial Loans and Leases [Member]
Financing Receivable, Modified [Line Items]
Term Extension - Financial Effect	One loan renewed and extended maturity by seven months
Term Extension - Payment Concessions	Six month payment deferrals