Note 10 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

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

	Three Months Ended
	March 31, 2024		April 2, 2023
Cost of revenue	$	237	$	78
Research and development		357		184
Selling, general and administrative		969		453
Total	$	1,563	$	715

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

	Shares Available for Grants
Balance at December 31, 2023		595
Restricted stock units (RSUs) granted		(114	)
RSUs forfeited or expired		1
Balance at March 31, 2024		482

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

			Weighted		Weighted
			Average		Average		Aggregate
	Number of		Exercise		Remaining		Intrinsic
	Shares		Price		Term		Value
	(in thousands)				(in years)		(in thousands)
Balance outstanding at December 31, 2023		60	$	19.45
Activity during period		—	$	—
Balance outstanding, exercisable, and vested at March 31, 2024		60	$	19.45		2.03	$	190

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	RSUs & PRSUs Outstanding
				Weighted
				Average
	Number of			Grant Date
	Shares			Fair Value
	(in thousands)
Nonvested at December 31, 2023		589		$	7.35
Granted		114			14.17
Vested and released		(70	)		12.89
Forfeited		(1	)		6.10
Nonvested at March 31, 2024		632		$	7.97