Employee Stock Plans (Tables)

6 Months Ended

Jun. 26, 2020

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						Six Months Ended
	June 26,			June 28,			June 26,			June 28,
(In millions)	2020			2019			2020			2019
Cost of revenues (1)	$	0.5		$	0.6		$	1.0		$	1.2
Research and development		0.1			0.1			0.1			0.2
Sales and marketing		0.3			0.3			0.6			0.6
General and administrative		2.2			1.9			4.5			3.8
		3.1			2.9			6.2			5.8
Income tax benefit		(0.6	)		(3.1	)		(1.5	)		(4.6	)
Stock-based compensation expense, net of tax	$	2.5		$	(0.2	)	$	4.7		$	1.2

Stock-based compensation expense capitalized in inventory for the three and six months ended June 26, 2020 and for the three and six months ended June 28, 2019 was not significant.

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 six months ended June 26, 2020:

(In millions)	Shares			Aggregate Fair Value
Unvested RSUs, PSUs and RSAs at December 27, 2019		1.8		$	41.9
Granted	0.9
Vested		(0.6	)
Forfeited		(0.1	)
Unvested RSUs, PSUs and RSAs as of June 26, 2020		2.0		$	44.5
Vested and expected to vest RSUs, PSUs and RSAs as of June 26, 2020		1.7		$	38.7