CONVERTIBLE NOTES AND OTHER DEBTS - Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
2022 Notes
Debt Instrument [Line Items]
Contractual interest expense	$ 1,511	$ 1,648	$ 953
Amortization of debt discount	0	685	373
Amortization of debt issuance costs	257	214	117
Total interest expense recognized	1,768	2,547	1,443
2024 Notes
Debt Instrument [Line Items]
Contractual interest expense	2,312	2,312	2,310
Amortization of debt discount	0	4,718	4,358
Amortization of debt issuance costs	874	641	595
Total interest expense recognized	$ 3,186	$ 7,671	$ 7,263