FAIR VALUE MEASUREMENTS - Schedule of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial assets and financial liabilities measured at fair value
Fair Value	$ 1,810,221	$ 2,087,571
Equity securities	15,862	9,812
Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Fair Value	1,400	5,832
U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Fair Value		15,946
Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Fair Value	139,829	172,845
Asset-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	336,557	468,223
Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	92,174	103,509
Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	1,087,210	1,111,312
Corporate debt securities
Financial assets and financial liabilities measured at fair value
Fair Value	153,051	209,904
Fair Value, Recurring | Derivative assets
Financial assets and financial liabilities measured at fair value
Derivative assets	30,373	30,008
Fair Value, Recurring | Derivative liabilities
Financial assets and financial liabilities measured at fair value
Derivative liabilities	58,099	54,132
Fair Value, Recurring | Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Fair Value	1,400	5,832
Fair Value, Recurring | U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Fair Value		15,946
Fair Value, Recurring | Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Fair Value	139,829	172,845
Fair Value, Recurring | Asset-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	336,557	468,223
Fair Value, Recurring | Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	92,174	103,509
Fair Value, Recurring | Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	1,087,210	1,111,312
Fair Value, Recurring | Corporate debt securities
Financial assets and financial liabilities measured at fair value
Fair Value	153,051	209,904
Fair Value, Recurring | Equity securities
Financial assets and financial liabilities measured at fair value
Equity securities	15,862	9,812
Fair Value, Recurring | Level 1 Inputs | Derivative assets
Financial assets and financial liabilities measured at fair value
Derivative assets	0	0
Fair Value, Recurring | Level 1 Inputs | Derivative liabilities
Financial assets and financial liabilities measured at fair value
Derivative liabilities	0	0
Fair Value, Recurring | Level 1 Inputs | Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Fair Value		0
Fair Value, Recurring | Level 1 Inputs | Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | Asset-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | Corporate debt securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 1 Inputs | Equity securities
Financial assets and financial liabilities measured at fair value
Equity securities	5,567	448
Fair Value, Recurring | Level 2 Inputs | Derivative assets
Financial assets and financial liabilities measured at fair value
Derivative assets	30,368	29,993
Fair Value, Recurring | Level 2 Inputs | Derivative liabilities
Financial assets and financial liabilities measured at fair value
Derivative liabilities	58,099	54,132
Fair Value, Recurring | Level 2 Inputs | Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Fair Value	1,400	5,832
Fair Value, Recurring | Level 2 Inputs | U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Fair Value		15,946
Fair Value, Recurring | Level 2 Inputs | Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Fair Value	139,829	172,845
Fair Value, Recurring | Level 2 Inputs | Asset-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	336,557	468,223
Fair Value, Recurring | Level 2 Inputs | Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	92,174	103,509
Fair Value, Recurring | Level 2 Inputs | Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	1,087,210	1,111,312
Fair Value, Recurring | Level 2 Inputs | Corporate debt securities
Financial assets and financial liabilities measured at fair value
Fair Value	153,051	209,904
Fair Value, Recurring | Level 2 Inputs | Equity securities
Financial assets and financial liabilities measured at fair value
Equity securities	10,295	9,364
Fair Value, Recurring | Level 3 Inputs | Derivative assets
Financial assets and financial liabilities measured at fair value
Derivative assets	5	15
Fair Value, Recurring | Level 3 Inputs | Derivative liabilities
Financial assets and financial liabilities measured at fair value
Derivative liabilities	0	0
Fair Value, Recurring | Level 3 Inputs | Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Fair Value		0
Fair Value, Recurring | Level 3 Inputs | Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | Asset-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | Corporate debt securities
Financial assets and financial liabilities measured at fair value
Fair Value	0	0
Fair Value, Recurring | Level 3 Inputs | Equity securities
Financial assets and financial liabilities measured at fair value
Equity securities	$ 0	$ 0