ACCRUED WARRANTY (Details)	9 Months Ended
	Sep. 28, 2019 USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance	$ 571,000
Additions	628,000
Claims	(554,000)
Ending Balance	$ 645,000
Minimum
Product Warranty Liability [Line Items]
Product Warranty Term	12 months
Extended Warranty Period	12 months
Maximum
Product Warranty Liability [Line Items]
Product Warranty Term	18 months
Extended Warranty Period	15 months
Extended Warranties
Product Warranty Liability [Line Items]
Deferred Revenue	$ 100,000