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GENERAL (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 02, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
General (Textual)
Accumulated deficit		$ (181,445)	$ (168,469)
Negative cash flow from operations		(12,589)	(14,815)	$ (14,774)
Net loss		(12,976)	(15,551)	$ (21,675)
Cash and cash equivalents		$ 20,350	$ 16,253
Subsequent Event [Member]
General (Textual)
Proceeds from warrants exercise	$ 13,200

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