Stock-Based Compensation (Tables)

6 Months Ended

Mar. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense in Consolidated Statements of Operations

The following presents stock-based compensation expense in the Company’s Consolidated Statements of Operations:


	Three Months Ended				Six Months Ended
	March 30, 2013		March 24, 2012		March 30, 2013		March 24, 2012
Cost of revenues	$	1,723	$	1,275	$	3,557	$	2,382
Research and development		2,015		1,277		3,883		2,478
Selling and marketing		2,567		1,844		4,768		3,394
General and administrative		5,739		4,553		11,680		9,352
Restructuring and divestiture		6,969		—		7,191		—

	$	19,013	$	8,949	$	31,079	$	17,606

Weighted-Average Assumptions Utilized to Value Stock Options

The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:


	Three Months Ended						Six Months Ended
	March 30, 2013			March 24, 2012			March 30, 2013			March 24, 2012
Risk-free interest rate		0.5	%		0.7	%		0.5	%		0.7	%
Expected volatility		43.7	%		46.9	%		43.7	%		46.9	%
Expected life (in years)		4.4			4.3			4.4			4.3
Dividend yield		—			—			—			—
Weighted average fair value of options granted	$	5.83		$	6.63		$	6.99		$	6.42