Stock-based Compensation (Tables)

12 Months Ended

Dec. 27, 2015

Summary of Stock Options

The following table presents a summary of our stock options:

	Year Ended
	December 27, 2015
	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
	(000’s)					(In years)		(In millions)
Outstanding at beginning of period		448		$	14.91
Granted		—			—
Exercised		(150	)		11.83
Cancelled and forfeited		(20	)		14.25
Expired		(210	)		17.85
Outstanding at end of period		68		$	12.82		2.9	$	0.5
Exercisable at end of period		48		$	12.35		1.9	$	0.4

Schedule of Deferred Stock Units

The following table presents a summary of our DSUs for the year ended December 27, 2015:

	Year Ended
	December 27, 2015
	Shares			Weighted Average Grant Date Fair Value
	(000’s)
Outstanding at beginning of period		377		$	14.50
Granted		50			20.51
Vested and released		(60	)		10.62
Forfeited		—			—
Outstanding at end of period		367		$	15.95

Summary of Restricted Stock Units

The following table presents a summary of our RSUs for the year ended December 27, 2015:

	Year Ended
	December 27, 2015
	Shares			Weighted Average Grant Date Fair Value
	(000’s)
Unvested at beginning of period		4,826		$	14.26
Granted		2,272			17.26
Vested		(1,660	)		14.58
Forfeited		(939	)		14.75
Unvested at end of period		4,499		$	15.53

Schedule of Performance Units

The following table presents a summary of our PUs for the year ended December 27, 2015:

	Year Ended
	December 27, 2015
	Shares			Weighted Average Grant Date Fair Value
	(000’s)
Unvested at beginning of period		1,135		$	13.88
Granted		520			17.18
Vested		(376	)		13.91
Forfeited		(212	)		14.49
Unvested at end of period		1,067		$	14.54

Summary of Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense by financial statement caption, for the years ended December 27, 2015, December 28, 2014 and December 29, 2013.

	Year Ended
	December 27, 2015		December 28, 2014		December 29, 2013
	(In millions)
Cost of Sales	$	5.2	$	5.3	$	4.9
Research and Development		8.8		8.4		7.5
Selling, General and Administrative		16.8		18.9		15.5
	$	30.8	$	32.6	$	27.9

Summary of Compensation Cost Relating To Unvested Awards

The following table summarizes total compensation cost related to unvested awards not yet recognized and the weighted average period over which it is expected to be recognized as of our year end.

	As of December 27, 2015
	Unrecognized Compensation Cost for Unvested Awards		Weighted Average Remaining Recognition Period
	(In millions)		(In years)
Options	$	0.1		1.4
DSUs		0.2		0.8
RSUs		52.3		2.7
PUs		6.0		1.9

Schedule of TSR Performance Based Award Fair Value Valuation Assumption

The fair value of our TSR performance-based awards at the date of grant was estimated using the Monte-Carlo simulation model with the following assumptions:

	Year Ended
	December 27, 2015			December 28, 2014			December 29, 2013
Stock price	$	17.48		$	—		$	—
Expected volatility		34.4	%		—	%		—	%
Risk-free interest rate		1.0	%		—	%		—	%
Dividend yield		—	%		—	%		—	%

Schedule of Options Fair Value Valuation Assumption

The fair value of each option grant for our stock plans is estimated on the date of the grant using the Black-Scholes option pricing model with the following assumptions:

	Year Ended
	December 27, 2015			December 28, 2014			December 29, 2013
Expected volatility		—	%		—	%		50.1	%
Dividend yield		—	%		—	%		—	%
Risk-free interest rate		—	%		—	%		0.7	%
Expected life, in years		—			—			5.33