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DEBT - Long-term debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Total carrying amount of debt $ 1,300,192 $ 1,293,738
Less: debt, current (99,931) 0
Debt, non-current 1,200,261 1,293,738
Convertible Notes | Notes due 2028    
Debt Instrument [Line Items]    
Long-term debt, gross 575,000 575,000
Less: unamortized debt issuance costs (4,429) (5,408)
Total carrying amount of debt 570,571 569,592
Convertible Notes | Notes due 2026    
Debt Instrument [Line Items]    
Long-term debt, gross 632,500 632,500
Less: unamortized debt issuance costs (2,810) (4,317)
Total carrying amount of debt 629,690 628,183
Convertible Notes | Notes due 2025    
Debt Instrument [Line Items]    
Long-term debt, gross 102,168 102,175
Less: unamortized debt discount (2,040) (5,644)
Less: unamortized debt issuance costs (197) (568)
Total carrying amount of debt 99,931 $ 95,963
Less: debt, current $ (102,200)