Common Stock and Stock-Based Compensation (Tables)

6 Months Ended

Jun. 25, 2016

Summary of Stock Options under Employee Equity Incentive Plan and Stock Option Plan for Non-Employee Directors

Information related to stock options under the Employee Equity Incentive Plan and the Stock Option Plan for Non-Employee Directors is summarized as follows:

	Shares			Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term in Years		Aggregate Intrinsic Value (in thousands)
Outstanding at December 26, 2015		1,127,162		$	63.99
Granted		765,112			199.05
Forfeited		(30,514	)		213.51
Expired		—			—
Exercised		(326,653	)		90.64
Outstanding at June 25, 2016		1,535,107		$	128.99		6.10	$	80,043
Exercisable at June 25, 2016		408,936		$	68.47		2.93	$	38,947
Vested and expected to vest at June 25, 2016		1,478,799		$	128.15		6.05	$	77,988

Summary of Vesting Activities of Shares Issued Under Investment Share Program and Restricted Stock Awards

The following table summarizes vesting activities of shares issued under the investment share program and restricted stock awards:

	Number of Shares			Weighted Average Fair Value
Non-vested at December 26, 2015		60,922		$	150.03
Granted		27,221			161.39
Vested		(19,281	)		111.56
Forfeited		(4,105	)		145.12
Non-vested at March 25, 2016		64,757		$	166.57