Share-Based Compensation (Tables)

6 Months Ended

Sep. 27, 2014

Option Activity and Information about Options Outstanding

The following table summarizes the share option activity during the six months ended September 27, 2014, and information about options outstanding at September 27, 2014:

	Number of Options			Weighted Average Exercise price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (in thousands)
Outstanding at March 29, 2014		8,377,928		$	13.69
Granted		724,746		$	92.73
Exercised		(1,142,083	)	$	7.13
Canceled/forfeited		(126,703	)	$	29.20
Outstanding at September 27, 2014		7,833,888		$	21.70		5.84	$	405,430
Vested or expected to vest at September 27, 2014		7,677,210		$	21.70		5.84
Vested and exercisable at September 27, 2014		3,388,805		$	10.26		5.56	$	207,492

Assumptions Used to Estimate Fair Value of Options

The following table represents assumptions used to estimate the fair value of options:

	Three Months Ended						Six Months Ended
	September 27, 2014			September 28, 2013			September 27, 2014			September 28, 2013
Expected dividend yield		0.0	%		0.0	%		0.0	%		0.0	%
Volatility factor		33.1	%		43.3	%		33.3	%		46.1	%
Weighted average risk-free interest rate		1.6	%		1.5	%		1.5	%		1.0	%
Expected life of option		4.75 years			4.75 years			4.75 years			4.75 years

Restricted Shares and Restricted Share Units

The following table summarizes restricted shares under the 2012 Plan as of September 27, 2014 and changes during the fiscal period then ended:

	Number of Unvested Restricted Shares			Weighted Average Grant Date Fair Value
Unvested at March 29, 2014		657,853		$	38.38
Granted		378,975		$	93.08
Vested		(45,489	)	$	62.18
Canceled/forfeited		(19,222	)	$	61.06
Unvested at September 27, 2014		972,117		$	57.73

The following table summarizes restricted share units under the 2012 Plan as of September 27, 2014 and changes during the fiscal period then ended:

	Number of Unvested Restricted Units			Weighted Average Grant Date Fair Value
Unvested at March 29, 2014		199,779		$	58.31
Granted		239,311		$	81.88
Vested		(4,370	)	$	68.65
Canceled/forfeited		(1,446	)	$	62.24
Unvested at September 27, 2014		433,274		$	71.21