INCOME TAXES - Schedule of Rate Reconciliation Between Income Tax Provisions and Effective Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Tax Disclosure [Abstract]
Income tax (benefit) at statutory rate	$ (2,862)	$ (4,775)	$ (6,489)
State taxes	2	2	(3)
Stock compensation and other permanent differences	252	75	211
Foreign taxes	95	(30)	(19)
Future benefit of deferred tax assets not recognized	2,684	4,815	6,365
Others	(19)
Provision for income taxes	$ 152	$ 87	$ 65