OTHER BORROWINGS - Narrative (Details) - USD ($) $ in Thousands						1 Months Ended	12 Months Ended
	Oct. 01, 2025	Jun. 01, 2025	Dec. 15, 2024	Mar. 15, 2022	Jul. 01, 2019	Dec. 31, 2021	Dec. 31, 2023	Dec. 13, 2021	Sep. 28, 2020	Dec. 06, 2019	Mar. 13, 2017
Debt Instrument [Line Items]
Federal home loan bank, advances, general debt obligations, amount of available, unused funds							$ 4,280,000
Credit arrangements for federal funds purchase							127,000
Pledged assets separately reported, loans pledged for federal reserve bank, at fair value							3,620,000
Loans pledged at federal reserve discount window available for borrowing							$ 2,670,000
Senior Subordinated Notes
Debt Instrument [Line Items]
Redemption price (as a percent)				100.00%
Subordinated notes payable due March 15, 2027 net of unamortized debt issuance cost of $0 and $551, respectively; fixed interest rate of 5.75% through March 14, 2022; variable interest rate thereafter at three-month LIBOR plus 3.616% (2027 subordinated notes) | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)							3.616%
Subordinated notes payable due March 15, 2027 net of unamortized debt issuance cost of $0 and $551, respectively; fixed interest rate of 5.75% through March 14, 2022; variable interest rate thereafter at three-month LIBOR plus 3.616% (2027 subordinated notes) | Senior Subordinated Notes
Debt Instrument [Line Items]
Face amount											$ 75,000
Interest rate, stated (as a percent)											5.75%
Redemption price (as a percent)				100.00%
Subordinated notes payable due March 15, 2027 net of unamortized debt issuance cost of $0 and $551, respectively; fixed interest rate of 5.75% through March 14, 2022; variable interest rate thereafter at three-month LIBOR plus 3.616% (2027 subordinated notes) | Senior Subordinated Notes | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				3.616%
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $1,296 and $1,680, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)							2.94%
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $1,296 and $1,680, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) | Senior Subordinated Notes
Debt Instrument [Line Items]
Face amount							$ 12,000		$ 110,000	$ 120,000
Interest rate, stated (as a percent)									3.875%	4.25%
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $1,296 and $1,680, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) | Scenario, Forecast | Senior Subordinated Notes
Debt Instrument [Line Items]
Redemption price (as a percent)	100.00%		100.00%
Subordinated notes payable due December 15, 2029 net of unamortized debt issuance cost of $1,296 and $1,680, respectively; fixed interest rate of 4.25% through December 14, 2024; variable interest rate thereafter at three-month SOFR plus 2.94% (2029 subordinated notes) | Scenario, Forecast | Senior Subordinated Notes | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.753%		2.94%
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $784 and $906, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)							3.63%
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $784 and $906, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)							3.63%
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $784 and $906, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | Senior Subordinated Notes
Debt Instrument [Line Items]
Face amount					$ 75,000			$ 50,000
Interest rate, stated (as a percent)					5.875%			5.50%
Unaccreted purchase accounting fair value adjustment					$ 1,300	$ 500
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $784 and $906, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | Scenario, Forecast | Senior Subordinated Notes
Debt Instrument [Line Items]
Redemption price (as a percent)		100.00%
Subordinated notes payable due May 31, 2030 net of unaccreted purchase accounting fair value adjustment of $784 and $906, respectively; fixed interest rate of 5.875% through May 31, 2025; variable interest rate thereafter at three-month SOFR plus 3.63% (Bank subordinated notes) (1) | Scenario, Forecast | Senior Subordinated Notes | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		3.63%