LHFI and ACL, LHFI - Schedule of Amortized Cost Basis of Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	$ 22,769	$ 32,413
Total Nonaccrual	62,698	63,128
Loans Past Due 90 Days or More Still Accruing	2,114	1,576
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	4,784	5,756
Total Nonaccrual	5,878	5,985
Loans Past Due 90 Days or More Still Accruing	7
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	1,319	1,895
Total Nonaccrual	3,418	4,487
Loans Past Due 90 Days or More Still Accruing	148	79
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	10,842	12,037
Total Nonaccrual	12,508	15,197
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	56	60
Total Nonaccrual	150	185
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	12,775	11,807
Loans Past Due 90 Days or More Still Accruing	1,655	1,257
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	1,363	12,665
Total Nonaccrual	19,328	15,618
Consumer Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	117	86
Loans Past Due 90 Days or More Still Accruing	304	240
State and Other Political Subdivision Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	3,664	3,970
Other Commercial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	4,405
Total Nonaccrual	$ 4,860	$ 5,793