Loans Held for Investment - Financial effects of the loans held for investment modified for borrowers (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
TDRs, Non-covered loans
Weighted Average Interest Rate Reduction (in percent)	0.50%		1.80%	1.30%
Weighted-Average Term Extension (in months)	15 months	22 months	22 months	17 months
Commercial real estate \| Non-owner occupied
TDRs, Non-covered loans
Weighted-Average Term Extension (in months)		34 months		34 months
Commercial real estate \| Owner occupied
TDRs, Non-covered loans
Weighted-Average Term Extension (in months)	24 months	23 months	24 months	13 months
Commercial and industrial
TDRs, Non-covered loans
Weighted Average Interest Rate Reduction (in percent)			1.80%	1.30%
Weighted-Average Term Extension (in months)	14 months	14 months	18 months	5 months
Construction and land development
TDRs, Non-covered loans
Weighted-Average Term Extension (in months)	26 months	22 months	19 months	22 months
1-4 family residential
TDRs, Non-covered loans
Weighted Average Interest Rate Reduction (in percent)	0.50%		1.80%
Weighted-Average Term Extension (in months)	6 months	12 months	64 months	12 months