Common Stock and Stock-Based Compensation (Tables)

3 Months Ended

Mar. 26, 2016

Summary of Stock Options under Equity Plan and Non-Employee Director Plan

Information related to stock options under the Equity Plan and the Non-Employee Director Plan 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		730,391			201.02
Forfeited		(14,742	)		289.54
Expired		—			—
Exercised		(217,928	)		93.37
Outstanding at March 26, 2016		1,624,883		$	125.57		5.97	$	109,116
Exercisable at March 26, 2016		503,621		$	69.59		2.69	$	58,566
Vested and expected to vest at March 26, 2016		1,568,821		$	124.68		5.92	$	106,588

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		(19,232	)		111.63
Forfeited		(1,633	)		134.65
Non-vested at March 26, 2016		67,278		$	165.98