Loans Held for Investment - Amortized cost basis of the loans held for investment modified for borrowers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.10%	0.30%
Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 7,082	$ 17,511
Payment Delay
TDRs, Non-covered loans
Total amortized cost of financing receivable modified		$ 5,777
Combination Term Extension and Rate Reduction
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 437
Commercial real estate | Non-owner occupied
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.10%
Commercial real estate | Non-owner occupied | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 2,255
Commercial real estate | Owner occupied
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.20%	0.30%
Commercial real estate | Owner occupied | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 3,501	$ 491
Commercial real estate | Owner occupied | Payment Delay
TDRs, Non-covered loans
Total amortized cost of financing receivable modified		$ 3,882
Commercial and industrial
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.10%	1.10%
Commercial and industrial | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 865	$ 16,797
Commercial and industrial | Payment Delay
TDRs, Non-covered loans
Total amortized cost of financing receivable modified		166
Commercial and industrial | Combination Term Extension and Rate Reduction
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 437
Commercial and industrial | Auto note financing industry subsector | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified		$ 13,000
Construction and land development
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.00%	0.20%
Construction and land development | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 350	$ 223
Construction and land development | Payment Delay
TDRs, Non-covered loans
Total amortized cost of financing receivable modified		$ 1,729
1-4 family residential
TDRs, Non-covered loans
Total Modifications as a percentage of portfolio segment	0.00%
1-4 family residential | Payment Term Extension
TDRs, Non-covered loans
Total amortized cost of financing receivable modified	$ 111