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DEBT - Long-term debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 01, 2021
Debt Instrument [Line Items]
Total carrying amount of debt	$ 1,292,391	$ 1,290,357
Less: debt, current	(92,115)	(90,892)
Debt, non-current	1,200,276	1,199,465
Convertible Notes | Notes due 2028
Debt Instrument [Line Items]
Long-term debt, gross	575,000	575,000
Less: unamortized debt issuance costs	(6,389)	(6,705)	$ (6,600)
Total carrying amount of debt	568,611	568,295
Convertible Notes | Notes due 2026
Debt Instrument [Line Items]
Long-term debt, gross	632,500	632,500
Less: unamortized debt issuance costs	(5,822)	(6,307)
Total carrying amount of debt	626,678	626,193
Convertible Notes | Notes due 2025
Debt Instrument [Line Items]
Long-term debt, gross	102,175	102,175
Less: unamortized debt discount	(9,124)	(10,229)
Less: unamortized debt issuance costs	(936)	(1,054)
Total carrying amount of debt	92,115	90,892
Less: debt, current	(102,200)
Convertible Notes | Notes due 2023
Debt Instrument [Line Items]
Long-term debt, gross	5,000	5,000
Less: unamortized debt issuance costs	(13)	(23)
Total carrying amount of debt	$ 4,987	$ 4,977

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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