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FAIR VALUE MEASUREMENT - Level 3 Investment Activity (Details) - Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 47,439	$ 51,530
Increase due to purchases of Level 3 investments	9,804	17,000
Transfers out of Level 3 investments	(7,510)
Decrease in fair value of Level 3 investments	(6,842)	(21,836)
Accrued interest, net on Level 3 investments	(91)	745
Ending balance	$ 42,800	$ 47,439

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- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Accrued Interest

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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