NET INCOME (LOSS) PER SHARE - Computation of Diluted Net Income (Loss) Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	450,292,866	455,031,831	453,573,945
Convertible Preferred Stock issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	209,979,779	158,365,655	158,365,655
Stock options issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	77,957,017	82,695,982	80,863,096
Warrants issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	705,349	705,349	1,080,349
Series E-1 Convertible Preferred Stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	35,544,141	35,544,141	35,544,141
Series F Convertible Preferred Stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total excluded securities (in shares)	126,106,580	177,720,704	177,720,704