v3.26.1
Fair Value Disclosures - Schedule of Estimated Fair Values of the Company’s Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial Assets:    
Available for sale $ 7,016,650 $ 6,372,463
Held to maturity 1,526 1,689
Equity 53,898 48,200
Net loans held for investment 11,523,199 11,284,931
Carrying amount    
Financial Assets:    
Available for sale 7,016,650 6,372,463
Held to maturity 1,526 1,689
Equity 53,898 48,200
Net loans held for investment 11,523,199 11,284,931
Loans held for sale 27,751 54,119
Derivatives 7,122 7,969
Total assets 19,399,448 19,834,553
Financial Liabilities    
Federal funds purchased and customer repurchase agreements 913,127 1,011,851
Accrued interest payable 8,214 9,306
Derivatives 5,958 7,021
Cash and due from banks | Carrying amount    
Financial Assets:    
Cash and due from banks 244,257 258,588
Short-term interest-bearing deposits | Carrying amount    
Financial Assets:    
Cash and due from banks 524,595 1,805,555
Interest-bearing deposits | Carrying amount    
Financial Assets:    
Cash and due from banks 450 1,039
Level 1 | Estimated Fair Value    
Financial Assets:    
Available for sale 1,203,022 929,305
Held to maturity 0 0
Equity 2,833 0
Net loans held for investment 0 0
Loans held for sale 0 0
Derivatives 0 0
Total assets 1,975,157 2,993,448
Financial Liabilities    
Federal funds purchased and customer repurchase agreements 913,127 1,011,851
Accrued interest payable 8,214 9,306
Derivatives 0 0
Level 1 | Cash and due from banks | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 244,257 258,588
Level 1 | Short-term interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 524,595 1,805,555
Level 1 | Interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 450 0
Level 2 | Estimated Fair Value    
Financial Assets:    
Available for sale 5,813,628 5,443,158
Held to maturity 1,542 1,023
Equity 39,477 36,690
Net loans held for investment 0 0
Loans held for sale 27,751 54,119
Derivatives 7,122 7,969
Total assets 5,889,520 5,542,959
Financial Liabilities    
Federal funds purchased and customer repurchase agreements 0 0
Accrued interest payable 0 0
Derivatives 5,958 7,021
Level 2 | Cash and due from banks | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 0 0
Level 2 | Short-term interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 0 0
Level 2 | Interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 0 0
Level 3 | Estimated Fair Value    
Financial Assets:    
Available for sale 0 0
Held to maturity 0 677
Equity 11,588 11,510
Net loans held for investment 11,491,904 11,285,348
Loans held for sale 0 0
Derivatives 0 0
Total assets 11,503,492 11,298,574
Financial Liabilities    
Federal funds purchased and customer repurchase agreements 0 0
Accrued interest payable 0 0
Derivatives 0 0
Level 3 | Cash and due from banks | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 0 0
Level 3 | Short-term interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks 0 0
Level 3 | Interest-bearing deposits | Estimated Fair Value    
Financial Assets:    
Cash and due from banks $ 0 $ 1,039