Stock-Based Compensation (Tables)

12 Months Ended

Jun. 28, 2014

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

Weighted Average Assumptions Used to Value Stock Option Grants

The weighted-average assumptions used in this model to value stock option grants and purchase rights under the ESPP for the fiscal years ended June 28, 2014, June 29, 2013 and June 30, 2012 were as follows:

	Year Ended
	June 28, 2014		June 29, 2013		June 30, 2012
Stock options:
Expected life	5.3 years		5.1 years		4.8 years
Risk-free interest rate	1.6	%	0.7	%	1.0	%
Volatility	77.3	%	82.9	%	91.6	%
Dividend yield	—		—		—
Purchase rights under ESPP:
Expected life	N/A		0.5 years		0.5 years
Risk-free interest rate	N/A		0.1	%	0.1	%
Volatility	N/A		67.0	%	87.0	%
Dividend yield	N/A		—		—

Amounts Included in Cost of Revenues and Operating Expenses for Stock-Based Compensation

The amounts included in cost of revenues, operating expenses and net loss for stock-based compensation expenses for the fiscal years ended June 28, 2014, June 29, 2013 and June 30, 2012 were as follows:

	Year Ended
	June 28, 2014			June 29, 2013			June 30, 2012
	(Thousands)
Stock-based compensation by category of expense:
Cost of revenues	$	1,001		$	1,627		$	1,401
Research and development	1,039			1,488			1,283
Selling, general and administrative	3,983			2,984			3,251
Restructuring, acquisition and related costs	—			277			—
	$	6,023		$	6,376		$	5,935
Stock-based compensation by type of award:
Stock options	$	983		$	2,450		$	3,068
Restricted stock awards	5,206			3,424			2,645
Purchase rights under ESPP	—			531			206
Inventory adjustment to cost of revenues	(166		)	(29		)	16
	$	6,023		$	6,376		$	5,935