Employee Stock Plans (Tables)

6 Months Ended

Jun. 25, 2021

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 25,			June 26,			June 25,			June 26,
(In millions)	2021			2020			2021			2020
Cost of revenues (1)	$	0.4		$	0.5		$	0.9		$	1.0
Research and development		-			0.1			0.1			0.1
Sales and marketing		0.4			0.3			0.7			0.6
General and administrative		2.9			2.2			5.5			4.5
		3.7			3.1			7.2			6.2
Income tax benefit		(0.9	)		(0.6	)		(1.7	)		(1.5	)
Stock-based compensation expense, net of tax	$	2.8		$	2.5		$	5.5		$	4.7

Stock-based compensation expense capitalized in inventory for the three and six months ended June 25, 2021 and June 26, 2020was 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 25, 2020		1.7		$	54.1
Granted	0.4
Vested		(0.6	)
Forfeited		(0.1	)
Unvested RSUs, PSUs and RSAs as of June 25, 2021		1.4		$	76.6
Vested and expected to vest RSUs, PSUs and RSAs as of June 25, 2021		1.3		$	67.4