Stock-Based Compensation (Tables)

9 Months Ended

Sep. 28, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Information Related to Stock-Based Compensation Plans

The following table sets forth certain information regarding the 1995 Plan:

	September 28, 2014
Shares available for grant	1,876,336
Shares of common stock reserved for issuance [pursuant to outstanding exercisable securities]	3,578,885

Schedule of Options Outstanding and Exercisable

The following table sets forth certain information regarding all options outstanding and exercisable:

	September 28, 2014
	Options Outstanding		Options Exercisable
Number	866,618		173,889
Weighted average exercise price	$	60.20	$	38.69
Aggregate intrinsic value	$ 17.9 million		$ 6.9 million
Weighted average remaining contractual term	5.1 years		3.6 years

Schedule of Restricted Stock Units Nonvested and Expected to Vest

The following table sets forth certain information regarding all RSUs nonvested and expected to vest:

	September 28, 2014
	RSUs Nonvested		RSUs Expected to Vest
Number	835,933		750,036
Weighted average grant date per share fair value	$	63.75	$	62.68
Aggregate intrinsic value	$ 65.3 million		$ 58.6 million
Weighted average remaining term to vest	1.3 years		1.2 years

Schedule of Stock-Based Compensation Expense

Our stock-based compensation expense was included in our Consolidated Statements of Operations as follows (in thousands):

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 28, 2014		September 29, 2013		September 28, 2014		September 29, 2013
Cost of sales	$	912	$	571	$	2,495	$	1,782
Research and development	762		511		2,092		1,587
Selling, general and administrative	4,820		3,522		12,869		9,947
Total stock-based compensation	$	6,494	$	4,604	$	17,456	$	13,316