Stock-Based Compensation (Tables)

3 Months Ended

Mar. 30, 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:

	March 30, 2014
Shares available for grant	2,001,765
Shares of common stock reserved for issuance	3,364,680

Schedule of Options Outstanding and Exercisable

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

	March 30, 2014
	Options Outstanding		Options Exercisable
Number	649,059		151,082
Weighted average exercise price	$	52.82	$	33.96
Aggregate intrinsic value	$ 32.5 million		$ 10.4 million
Weighted average remaining contractual term	5.1 years		3.8 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:

	March 30, 2014
	RSUs Nonvested		RSUs Expected to Vest
Number	713,858		627,724
Weighted average grant date per share fair value	$	58.39	$	57.53
Aggregate intrinsic value	$ 73.4 million		$ 64.6 million
Weighted average remaining term to vest	1.5 years		1.5 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
	March 30, 2014		March 31, 2013
Cost of sales	$	726	$	595
Research and development	617		531
Selling, general and administrative	3,796		3,238
Total stock-based compensation	$	5,139	$	4,364