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Fair Value Measurements - Schedule of Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets    
Interest-bearing deposits with other banks $ 612,349 $ 684,001
Investment securities held-to-maturity 730,994 774,947
Federal Reserve and Federal Home Loan Bank stock 32,500 28,327
Bank-owned life insurance 345,469 335,177
Liabilities    
Interest-bearing deposits 973,651 1,038,154
Carrying Value    
Assets    
Cash and due from banks 13,394 11,692
Interest-bearing deposits with other banks 612,349 684,001
Investment securities available-for-sale 904,183 976,770
Investment securities held-to-maturity 814,878 854,780
Federal Reserve and Federal Home Loan Bank stock 32,500 28,327
Loans held for sale 49,663 90,650
Loans held for investment 6,622,435 7,280,459
Bank-owned life insurance 345,469 335,177
Annuity investment 11,558 12,061
Accrued interest receivable 36,050 41,373
Liabilities    
Noninterest-bearing deposits 1,567,336 1,433,952
Interest-bearing deposits 4,035,638 4,662,967
Time deposits 2,582,123 3,036,687
Other short-term borrowings 100,000  
Long-term borrowings 76,593 76,428
Accrued interest payable 9,598 10,798
Carrying Value | Interest Rate Product    
Assets    
Interest rate product 25,254 24,332
Liabilities    
Interest rate product 37,964 23,942
Fair Value    
Assets    
Cash and due from banks 13,394 11,692
Interest-bearing deposits with other banks 612,349 684,001
Investment securities available-for-sale 904,183 976,770
Investment securities held-to-maturity 730,994 774,947
Loans held for sale 49,663 90,650
Loans held for investment 6,505,181 7,093,276
Bank-owned life insurance 345,469 335,177
Annuity investment 11,558 12,061
Accrued interest receivable 36,050 41,373
Liabilities    
Noninterest-bearing deposits 1,567,336 1,433,952
Interest-bearing deposits 4,035,638 4,662,967
Time deposits 2,582,686 3,050,951
Other short-term borrowings 100,000  
Long-term borrowings 79,397 80,329
Accrued interest payable 9,598 10,798
Fair Value | Interest Rate Product    
Assets    
Interest rate product 25,254 24,332
Liabilities    
Interest rate product 37,964 23,942
Fair Value | Quoted Prices  (Level 1)    
Assets    
Cash and due from banks 13,394 11,692
Interest-bearing deposits with other banks 0 0
Investment securities available-for-sale 0 0
Investment securities held-to-maturity 0 0
Federal Reserve and Federal Home Loan Bank stock 0 0
Loans held for sale 0 0
Loans held for investment 0 0
Bank-owned life insurance 0 0
Annuity investment 0 0
Accrued interest receivable 0 0
Liabilities    
Noninterest-bearing deposits 0 0
Interest-bearing deposits 0 0
Time deposits 0 0
Other short-term borrowings 0  
Long-term borrowings 0 0
Accrued interest payable 0 0
Fair Value | Quoted Prices  (Level 1) | Interest Rate Product    
Assets    
Interest rate product 0 0
Liabilities    
Interest rate product 0 0
Fair Value | Significant Other Observable Inputs  (Level 2)    
Assets    
Cash and due from banks 0 0
Interest-bearing deposits with other banks 612,349 684,001
Investment securities available-for-sale 904,183 976,770
Investment securities held-to-maturity 730,994 774,947
Federal Reserve and Federal Home Loan Bank stock 0 0
Loans held for sale
Loans held for investment 0 0
Bank-owned life insurance 345,469 335,177
Annuity investment 11,558 12,061
Accrued interest receivable 36,050 41,373
Liabilities    
Noninterest-bearing deposits 1,567,336 1,433,952
Interest-bearing deposits 4,035,638 4,662,967
Time deposits 2,582,686 3,050,951
Other short-term borrowings 100,000  
Long-term borrowings 79,397 80,329
Accrued interest payable 9,598 10,798
Fair Value | Significant Other Observable Inputs  (Level 2) | Interest Rate Product    
Assets    
Interest rate product 25,254 24,332
Liabilities    
Interest rate product 37,964 23,942
Fair Value | Significant Other  Unobservable Inputs  (Level 3)    
Assets    
Cash and due from banks 0 0
Interest-bearing deposits with other banks 0 0
Investment securities available-for-sale 0 0
Investment securities held-to-maturity 0 0
Federal Reserve and Federal Home Loan Bank stock 0 0
Loans held for sale 49,663 90,650
Loans held for investment 6,505,181 7,093,276
Bank-owned life insurance 0 0
Annuity investment 0 0
Accrued interest receivable 0 0
Liabilities    
Noninterest-bearing deposits 0 0
Interest-bearing deposits 0 0
Time deposits 0 0
Other short-term borrowings 0  
Long-term borrowings 0 0
Accrued interest payable 0 0
Fair Value | Significant Other  Unobservable Inputs  (Level 3) | Interest Rate Product    
Assets    
Interest rate product 0 0
Liabilities    
Interest rate product $ 0 $ 0