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FAIR VALUE MEASUREMENTS - Schedule of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale $ 2,099,259 $ 1,810,221
Equity securities 15,931 15,862
Obligations of U.S. government corporations and agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 113,605 1,400
Obligations of states and political subdivisions    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 247,544 139,829
Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 285,562 336,557
Commercial mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 135,981 92,174
Residential mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,267,576 1,087,210
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 48,991 153,051
Fair Value, Recurring | Derivative assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 33,973 30,373
Fair Value, Recurring | Derivative liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 45,973 58,099
Fair Value, Recurring | Obligations of U.S. government corporations and agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 113,605 1,400
Fair Value, Recurring | Obligations of states and political subdivisions    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 247,544 139,829
Fair Value, Recurring | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 285,562 336,557
Fair Value, Recurring | Commercial mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 135,981 92,174
Fair Value, Recurring | Residential mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,267,576 1,087,210
Fair Value, Recurring | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 48,991 153,051
Fair Value, Recurring | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 15,931 15,862
Fair Value, Recurring | Level 1 Inputs | Derivative assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value, Recurring | Level 1 Inputs | Derivative liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value, Recurring | Level 1 Inputs | Obligations of U.S. government corporations and agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Obligations of states and political subdivisions    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Commercial mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Residential mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 Inputs | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 190 5,567
Fair Value, Recurring | Level 2 Inputs | Derivative assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 33,934 30,368
Fair Value, Recurring | Level 2 Inputs | Derivative liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 45,914 58,099
Fair Value, Recurring | Level 2 Inputs | Obligations of U.S. government corporations and agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 113,605 1,400
Fair Value, Recurring | Level 2 Inputs | Obligations of states and political subdivisions    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 247,544 139,829
Fair Value, Recurring | Level 2 Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 285,562 336,557
Fair Value, Recurring | Level 2 Inputs | Commercial mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 135,981 92,174
Fair Value, Recurring | Level 2 Inputs | Residential mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,267,576 1,087,210
Fair Value, Recurring | Level 2 Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 48,991 153,051
Fair Value, Recurring | Level 2 Inputs | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 15,741 10,295
Fair Value, Recurring | Level 3 Inputs | Derivative assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 39 5
Fair Value, Recurring | Level 3 Inputs | Derivative liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 59 0
Fair Value, Recurring | Level 3 Inputs | Obligations of U.S. government corporations and agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Obligations of states and political subdivisions    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Commercial mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Residential mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 Inputs | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities $ 0 $ 0