LHFI and ACL, LHFI - Troubled debt restructurings on financial effect (Details) - Troubled Debt Restructurings [Member]	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Modifications [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 Modifications [Line Items]
Term Extension - Financial Effect	Extended amortization on loans with term adjusted by weighted-average 10.6 years	Extended amortization with term adjusted by weighted-average 3.2 years
Weighted average amortization period	10 years 7 months 6 days	3 years 2 months 12 days
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Modifications [Line Items]
Term Extension - Financial Effect	Modified lines of credit to amortize over 12 month and 24 month terms	Modifed lines of credit to amortize over 12 month and 24 month terms
Commercial and Industrial Loans [Member]
Financing Receivable Modifications [Line Items]
Term Extension - Payment Concessions		Six month payment deferrals
Consumer Loans [Member]
Financing Receivable Modifications [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 [Member]
Financing Receivable Modifications [Line Items]
Term Extension - Financial Effect		One loan renewed and extended maturity by seven months
Term Extension - Payment Concessions		Six month payment deferral