CONVERTIBLE DEBT - Components of Convertible Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Jul. 01, 2022
Debt Instrument [Line Items]
Carrying amount	$ 98,941	$ 113,541
2022 Notes
Debt Instrument [Line Items]
Principal amount	37,707	37,707
Less: Debt discount, net of amortization	(672)	0
Less: Debt issuance costs, net of amortization	(211)	(119)
Carrying amount	$ 36,824	37,588
Remaining debt discount amortization period (years)	10 months 24 days
Effective interest rate on liability component (as a percent)	6.95%
2024 Notes
Debt Instrument [Line Items]
Principal amount	$ 115,500	115,500
Less: Debt discount, net of amortization	(14,576)	0
Less: Debt issuance costs, net of amortization	(1,983)	(1,959)
Carrying amount	$ 98,941	$ 113,541
Remaining debt discount amortization period (years)	2 years 8 months 12 days
Effective interest rate on liability component (as a percent)	7.95%