Common Stock and Share-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2019

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

Information related to stock options under the Restated 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 29, 2018		366,829		$	155.75
Granted		15,524			312.74
Forfeited		—			—
Expired		—			—
Exercised		(33,983	)		85.78
Outstanding at March 30, 2019		348,370		$	169.58		5.63	$	43,879
Exercisable at March 30, 2019		135,926		$	127.73		3.43	$	22,717
Vested and expected to vest at March 30, 2019		316,274		$	166.69		5.49	$	40,747

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:

	Number of Shares			Weighted Average Fair Value
Non-vested at December 29, 2018		126,720		$	192.74
Granted		24,579		$	258.92
Vested		(20,230	)	$	163.83
Forfeited		(611	)	$	134.61
Non-vested at March 30, 2019		130,458		$	209.96