5. Stock Option Plan (Tables)

6 Months Ended

Jun. 28, 2019

Table Text Block Supplement [Abstract]

Schedule of Stock Option Plan Activity

A summary of activity in the stock option plan for the six months ended June 28, 2019 follows (shares in thousands):

		Weighted-
		Average
	Number	Exercise
	of Shares	Price
Outstanding as of beginning of the period	1,597	$	0.65
Granted	165		0.80
Exercised	(130)		0.17
Forfeited or expired	(40)		0.66
Outstanding as of end of the period	1,592		0.71
Exercisable as of end of the period	1,523	$	0.61

Schedule of Stock Options Valuation Assumptions

The weighted average values of employee stock options granted under the stock option plan, as well as the weighted average assumptions used in calculating these values during the first six months of 2019, were based on estimates as of the date of grant as follows:

Risk-free interest rate	2.64%
Dividend yield	0.00%
Volatility	81.15%
Expected life	3.5 years