v3.26.1
FAIR VALUE MEASUREMENTS - Schedule of Preferred Stock Derivative Liability (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Convertible Preferred Derivative    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Convertible Preferred Derivative $ 9,300 $ 13,600
Level 1 | Convertible Preferred Derivative    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Convertible Preferred Derivative 0 0
Level 2 | Convertible Preferred Derivative    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Convertible Preferred Derivative 0 0
Level 3 | Convertible Preferred Derivative    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Convertible Preferred Derivative 9,300 13,600
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Beginning balance 13,600 0
Initial recognition at issuance   31,000
Change in fair value recognized in earnings (4,300) (17,400)
Conversions/ settlements 0 0
Ending balance 9,300 13,600
Level 3 | New Term Loan Derivative    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Beginning balance $ 0 0
Initial recognition at issuance   3,558
Change in fair value recognized in earnings   1,589
Conversions/ settlements   (5,147)
Ending balance   $ 0