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	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	$ 11,914	$ 22,769
Total Nonaccrual	62,052	62,698
Loans Past Due 90 Days or More Still Accruing	1,347	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	146	4,784
Total Nonaccrual	4,399	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	493	1,319
Total Nonaccrual	3,547	3,418
Loans Past Due 90 Days or More Still Accruing	644	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	9,580	10,842
Total Nonaccrual	11,668	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	782	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	1,274
Total Nonaccrual	13,618	12,775
Loans Past Due 90 Days or More Still Accruing	449	1,655
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL	421	1,363
Total Nonaccrual	16,869	19,328
Loans Past Due 90 Days or More Still Accruing	50
Consumer Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	126	117
Loans Past Due 90 Days or More Still Accruing	204	304
State and Other Political Subdivision Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total Nonaccrual	3,196	3,664
Other Commercial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Nonaccrual With No ACL		4,405
Total Nonaccrual	$ 227	$ 4,860