CONVERTIBLE DEBT - Components of Convertible Notes (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 02, 2021	Dec. 31, 2021	Apr. 01, 2022
Debt Instrument [Line Items]
Carrying amount		$ 98,941	$ 113,324
2022 Notes
Debt Instrument [Line Items]
Principal amount		37,707	37,707
Less: Debt discount, net of amortization		(672)
Less: Debt issuance costs, net of amortization		(211)	(189)
Carrying amount		$ 36,824	37,518
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)
Less: Debt issuance costs, net of amortization		(1,983)	(2,176)
Carrying amount		$ 98,941	$ 113,324
Remaining debt discount amortization period (years)	2 years 8 months 12 days
Effective interest rate on liability component (as a percent)		7.95%