Employee Stock Plans (Tables)

3 Months Ended

Mar. 31, 2023

Postemployment Benefits [Abstract]

Stock-Based Compensation Expense Included in Condensed Consolidated Statements of Operations

The following table shows the Company’s stock-based compensation expense included in the Condensed Consolidated Statements of Operations:

	Three Months Ended
	March 31,		April 1,
(In millions)	2023		2022
Cost of revenues (1)	$	0.3	$	0.5
Research and development		0.1		0.1
Sales and marketing		0.3		0.3
General and administrative		3.0		4.7
Total stock-based compensation	$	3.7	$	5.6

(1)Stock-based compensation expense capitalized in inventory for the three months ended March 31, 2023 and April 1, 2022 were immaterial.

Summary of Restricted Stock Unit, Performance Stock Units and Restricted Stock Award Activity

The following table summarizes the Company’s combined RSU, PSU and RSA activity for the three months ended March 31, 2023 (in millions):

				Aggregate
	Number of			Intrinsic
	Shares			Value
Unvested restricted stock units and restricted stock awards at December 30, 2022		1.1		$	37.6
Granted		0.1
Vested		(0.1	)
Forfeited		—
Unvested restricted stock units and restricted stock awards at March 31, 2023		1.1		$	35.6
Vested and expected to vest restricted stock units and restricted stock    awards		1.1		$	35.6