Loans and Allowance for Credit Losses - Nonaccrual Loans, Excluding Loans Acquired, Segregated by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	$ 105,788	$ 83,325
Consumer
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	988	1,076
Consumer | Credit cards
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	522	487
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	466	589
Real Estate
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	53,968	41,626
Real Estate | Construction and development
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	2,764	2,457
Real Estate | Single family residential
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	30,237	27,209
Real Estate | Other commercial
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	20,967	11,960
Commercial
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	50,829	40,620
Commercial | Commercial
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	50,168	39,886
Commercial | Agricultural
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	661	734
Other
Financing Receivable, Past Due [Line Items]
Loans in nonaccrual status	$ 3	$ 3