Note 9 - Stock-based Compensation (Tables)

9 Months Ended

Oct. 01, 2022

Notes Tables

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

	Three Months Ended				Nine Months Ended
	October 1,		October 2,		October 1,		October 2,
(In thousands)	2022		2021		2022		2021
Cost of revenue	$	880	$	653	$	2,705	$	2,144
Research and development		4,925		3,463		14,461		10,199
Selling, general, and administrative		8,153		6,134		24,041		20,281
Total stock-based compensation	$	13,958	$	10,250	$	41,207	$	32,624

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		642
Vested		(1,083	)
Balance, October 1, 2022		988