LEASES - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Leases [Abstract]
Operating lease costs	$ 9,599
Finance lease cost - amortization of right-of-use assets	211
Finance lease cost - interest on lease liabilities	64
Short-term lease cost	185
Variable lease cost	3,349
Sublease Income	(757)	$ (700)
Total lease cost	$ 12,651
Weighted average remaining lease term:
Operating leases (in years)	6 years 1 month 24 days
Finance leases (in years)	3 years 7 months 28 days
Weighted average discount rate:
Operating leases (as a percent)	6.42%
Finance leases (as a percent)	6.24%