Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI - Schedule of Amortized Cost Basis of Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	$ 7,534	$ 22,769
Total Nonaccrual	67,927	62,698
Loans Past Due 90 Days or More Still Accruing	1,842	2,114
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	142	4,784
Total Nonaccrual	4,383	5,878
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	489	1,319
Total Nonaccrual	3,531	3,418
Loans Past Due 90 Days or More Still Accruing	292	148
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	5,263	10,842
Total Nonaccrual	7,738	12,508
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL		56
Total Nonaccrual	574	150
Other Construction [Member] | Other Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	0
Total Nonaccrual	7,620
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	1,233
Total Nonaccrual	14,774	12,775
Loans Past Due 90 Days or More Still Accruing	1,086	1,655
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	407	1,363
Total Nonaccrual	25,899	19,328
Loans Past Due 90 Days or More Still Accruing	0
Consumer Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	129	117
Loans Past Due 90 Days or More Still Accruing	416	304
State and Other Political Subdivision Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	2,988	3,664
Other Commercial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL		4,405
Total Nonaccrual	291	$ 4,860
Loans Past Due 90 Days or More Still Accruing	$ 48