FAIR VALUE MEASUREMENTS - Summary of carrying value and fair value of the Company's convertible notes (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Carrying value of debt facilities, current	$ 157,971	$ 0
Total carrying value of debt instruments	857,364	828,974
Total fair value of debt instruments	904,114	864,867
2027 Notes
Debt Instrument [Line Items]
Total carrying value of debt instruments	157,971	157,478
Total fair value of debt instruments	152,100	143,076
2030 Notes
Debt Instrument [Line Items]
Total carrying value of debt instruments	699,393	671,496
Total fair value of debt instruments	$ 752,014	$ 721,791