CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Net revenues:
Total net revenues	$ 18,840	$ 24,827
Cost of net revenues:
Total cost of net revenues	10,684	17,588
Gross profit	8,156	7,239
Operating expenses:
Research and development	3,284	3,986
Selling, general and administrative	5,972	5,252
Total operating expenses	9,256	9,238
Loss from operations	(1,100)	(1,999)
Interest income and other income (expense), net	142	160
Loss before provision for income taxes	(958)	(1,839)
Provision for income taxes	266	553
Net loss	$ (1,224)	$ (2,392)
Net loss per share:
Basic and Diluted	$ (0.05)	$ (0.10)
Weighted average shares outstanding:
Basic and Diluted	23,483	22,855
Systems and components
Net revenues:
Total net revenues	$ 13,836	$ 21,637
Cost of net revenues:
Total cost of net revenues	7,767	15,100
Technology development
Net revenues:
Total net revenues	5,004	3,190
Cost of net revenues:
Total cost of net revenues	$ 2,917	$ 2,488