WARRANTS - Summary of Warrant Activity (Details) - Warrant	9 Months Ended
	Sep. 26, 2021 $ / shares shares
Number of Shares
Warrants Outstanding, Beginning balance (in shares) | shares	2,273,533
Grants (in shares) | shares	8,184
Warrants exercised (in shares) | shares	(475,853)
Warrants cancelled (in shares) | shares	2,849
Warrants Outstanding, Ending balance (in shares) | shares	1,803,015
Warrants exercisable, Ending balance (in shares) | shares	1,803,015
Weighted Average Exercise Price
Weighted average exercise price of outstanding warrants, Beginning balance (in dollars per share) | $ / shares	$ 4.60
Weighted average exercise price of grants (in dollars per share) | $ / shares	3.88
Weighted average exercise price of warrants exercised (in dollars per share) | $ / shares	3.88
Weighted average exercise price of warrants cancelled (in dollars per share) | $ / shares	3.88
Weighted average exercise price of outstanding warrants, Ending balance (in dollars per share) | $ / shares	4.76
Weighted average exercise price of exercisable warrants, Ending balance (in dollars per share) | $ / shares	$ 4.76
Weighted Average Remaining Contractual Life (Years)
Weighted average remaining contractual life (in years) of warrants outstanding. Beginning balance	3 years 6 months
Weighted average remaining contractual life (in years) of warrants granted	3 years 9 months 18 days
Weighted average remaining contractual life (in years) of warrants exercised	3 years 8 months 12 days
Weighted average remaining contractual life (in years) of warrants cancelled	3 years 9 months 18 days
Weighted average remaining contractual life (in years) of warrants outstanding, Ending balance	3 years 6 months
Weighted average remaining contractual life (in years) of warrants exercisable, Ending balance	3 years 6 months