Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 27, 2020

Accounting Policies [Abstract]

Total Stock-Based Compensation Expense

The following table presents details of total stock-based compensation expense that is included in each functional line item on our condensed consolidated statements of operations:

	Three months ended				Six months ended
	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Cost of revenue	$	1,000	$	1,000	$	2,000	$	2,000
Research and development		2,000		2,000		4,000		5,000
Selling, general and administrative		19,000		20,000		37,000		40,000
Total stock-based compensation expense	$	22,000	$	23,000	$	43,000	$	47,000