LHFI and ACL, LHFI - Troubled debt restructurings on financial effect (Details) - Troubled Debt Restructurings [Member]	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 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 with term adjusted by weighted-average 2.3 years	Extended amortization with term adjusted by weighted-average 1.8 years
Weighted average amortization period	2 years 3 months 18 days	1 year 9 months 18 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 a twenty-four month term	Modified lines of credit to amortize over a twenty-four month term
Commercial and Industrial Loans [Member]
Financing Receivable Modifications [Line Items]
Term Extension - Payment Concessions	Six month payment deferrals	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	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	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	One loan renewed and extended maturity by seven months
Term Extension - Payment Concessions	Six month payment deferrals	Six month payment deferral