LHFI and ACL, LHFI - Troubled debt restructurings on financial effect (Details) - Troubled Debt Restructurings [Member]	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Modifications [Line Items]
Term Extension - Financial Effect		Renewed with an extended amortization period and lowered the monthly payment amount for the borrower.
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 the amortization periods on six loans by a weighted-average of 2.99 years.	Extended the amortization periods on four loans by a weighted-average of 14 years, which reduced the aggregate monthly payment amounts for the borrowers.
Weighted average amortization period	2 years 11 months 26 days	14 years
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 one loan and multiple lines of credit to amortize over 24 month terms.