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SCHEDULE OF SEGMENT REPORTING INFORMATION, BY SEGMENT (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2022	Mar. 27, 2021
Revenue from External Customer [Line Items]
Total Revenues	$ 11,578	$ 11,676
Defense [Member]
Revenue from External Customer [Line Items]
Total Revenues	4,757	4,993
Industrial [Member]
Revenue from External Customer [Line Items]
Total Revenues	1,530	2,041
Consumer [Member]
Revenue from External Customer [Line Items]
Total Revenues	220	534
Research and Development [Member]
Revenue from External Customer [Line Items]
Total Revenues	4,908	3,561
License And Royalties [Member]
Revenue from External Customer [Line Items]
Total Revenues	$ 163	$ 547

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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