v3.26.3
FAIR VALUES OF FINANCIAL INSTRUMENTS - Summary of Fair Value Measurements of Assets and Liabilities Recognized in the Balance Sheets Measured at Fair Value on Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 76,495 $ 48,468
Derivative liabilities 76,204 47,980
U.S. Government-sponsored agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 67,196 76,099
State and municipal    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 789,942 902,294
U.S. Government-sponsored mortgage-backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 386,039 419,510
Foreign investment    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 1,491 1,500
Corporate obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 6,872 7,699
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored mortgage-backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign investment    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 76,495 48,468
Derivative liabilities 76,204 47,980
Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 67,196 76,099
Significant Other Observable Inputs (Level 2) | State and municipal    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 787,883 900,339
Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored mortgage-backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 386,039 419,510
Significant Other Observable Inputs (Level 2) | Foreign investment    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 1,491 1,500
Significant Other Observable Inputs (Level 2) | Corporate obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 6,841 7,668
Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Significant Unobservable Inputs (Level 3) | State and municipal    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 2,059 1,955
Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored mortgage-backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Significant Unobservable Inputs (Level 3) | Foreign investment    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale 0 0
Significant Unobservable Inputs (Level 3) | Corporate obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities available for sale $ 31 $ 31