Note 9 - Stock-based Compensation (Tables)

6 Months Ended

Jul. 02, 2022

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended				Six Months Ended
	July 2,		July 3,		July 2,		July 3,
(In thousands)	2022		2021		2022		2021
Cost of revenue	$	890	$	825	$	1,825	$	1,491
Research and development		4,691		3,969		9,536		6,736
Selling, general, and administrative		7,543		7,126		15,888		14,147
Total stock-based compensation	$	13,124	$	11,920	$	27,249	$	22,374

Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

(Shares in thousands)	Total
Balance, January 1, 2022		1,246
Granted		183
Effect of vesting multiplier		516
Vested		(851	)
Balance, July 2, 2022		1,094