WARRANTS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 26, 2021	Sep. 26, 2021
Warrant Activity
Issuance of common stock through exercise of warrants	$ 810	$ 2,193
Warrant
Warrant Activity
Warrants exercised (in shares)		475,853
Issuance of common stock through exercise of warrants (in shares)		464,643
Class A Shares
Warrant Activity
Issuance of common stock through exercise of warrants (in shares)	199,379	464,643