v3.26.1
FAIR VALUE - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale securities $ 1,864,710 $ 2,198,459
Accrued interest receivable 28,400 27,600
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 549,570 419,453
Available for sale securities 1,864,710 2,198,459
Loans held for investment, net of allowance 7,502,521 7,216,962
Accrued interest receivable 36,589 35,869
Deposits 8,982,010 9,021,466
Accrued interest payable 5,240 5,508
Borrowed funds 135,000  
Subordinated debt 40,256 40,226
Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 549,570 419,453
Available for sale securities 1,864,710 2,198,459
Loans held for investment, net of allowance 7,471,807 7,203,747
Accrued interest receivable 36,589 35,869
Deposits 8,979,347 9,019,219
Accrued interest payable 5,240 5,508
Borrowed funds 135,000  
Subordinated debt 40,239 40,473
Estimated Fair Value | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 549,570 419,453
Available for sale securities 0 0
Loans held for investment, net of allowance 0 0
Accrued interest receivable 499 294
Deposits 0 0
Accrued interest payable 0 0
Borrowed funds 0  
Subordinated debt 0 0
Estimated Fair Value | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Available for sale securities 1,864,710 2,198,459
Loans held for investment, net of allowance 0 0
Accrued interest receivable 7,687 7,950
Deposits 8,979,347 9,019,219
Accrued interest payable 5,240 5,508
Borrowed funds 135,000  
Subordinated debt 40,239 40,473
Estimated Fair Value | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Available for sale securities 0 0
Loans held for investment, net of allowance 7,471,807 7,203,747
Accrued interest receivable 28,403 27,625
Deposits 0 0
Accrued interest payable 0 0
Borrowed funds 0  
Subordinated debt $ 0 $ 0