FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Reconciliation of Common Stock Warrant Liability Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Common Stock Warrant Liability
Level 3 Liabilities [Roll Forward]
Fair value-beginning of period	$ 53,664	$ 140,590
Change in fair value	(34,150)	(86,926)
Fair value-end of period	19,514	53,664
Derivative Financial Instruments, Liabilities | Series A Redeemable Convertible Preferred Stock
Level 3 Liabilities [Roll Forward]
Fair value-beginning of period	0
Issuance	497,100
Change in fair value	(88,300)
Fair value-end of period	408,800	0
Derivative Financial Instruments, Liabilities | Series B Redeemable Convertible Preferred Stock
Level 3 Liabilities [Roll Forward]
Fair value-beginning of period	0
Issuance	297,675
Change in fair value	(67,050)
Fair value-end of period	$ 230,625	$ 0