Stock-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock-Based Compensation Expense

Total stock-based compensation expense included in our Consolidated Statements of Operations is presented in the following table:

	Three Months Ended
(In thousands)	March 30, 2019		March 31, 2018
Cost of products sold	$	202	$	237
Research and development	1,125		1,207
Selling, general, and administrative	2,359		3,356
Total stock-based compensation	$	3,686	$	4,800

Share-based Compensation, Stock Options, Activity

The following table summarizes the activity for our stock options and RSUs with a market or performance condition during the first three months of fiscal 2019:

(Shares in thousands)	Unvested		Vested	Total
Balance, December 29, 2018	909		—	909
Granted	265		—	265
Canceled	(98	)	—	(98	)
Balance, March 30, 2019	1,076		—	1,076