Stock-Based Compensation (Tables)

6 Months Ended

Jun. 28, 2015

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:

	June 28, 2015
Shares available for grant	1,716,842
Shares of common stock reserved for issuance pursuant to outstanding exercisable securities	3,391,964

Schedule of Options Outstanding and Exercisable

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

	June 28, 2015
	Options Outstanding		Options Exercisable
Number	1,005,953		311,567
Weighted average exercise price	$	69.25	$	53.84
Aggregate intrinsic value	$ 16.2 million		$ 9.8 million
Weighted average remaining contractual term	5.3 years		3.7 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:

	June 28, 2015
	RSUs Nonvested		RSUs Expected to Vest
Number	669,169		584,755
Weighted average grant date per share fair value	$	73.74	$	72.97
Aggregate intrinsic value	$ 56.8 million		$ 49.7 million
Weighted average remaining term to vest	1.6 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				Twenty-Six Weeks Ended
	June 28, 2015		June 29, 2014		June 28, 2015		June 29, 2014
Cost of sales	$	797	$	857	$	1,589	$	1,583
Research and development	659		713		1,289		1,330
Selling, general and administrative	3,089		4,253		7,616		8,048
Total stock-based compensation	$	4,545	$	5,823	$	10,494	$	10,961