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Share-Based Compensation (Schedule of Fair Value Assumptions for Stock Options and Employee Stock Purchase Plan Awards) (Details)	3 Months Ended
	Sep. 30, 2012	Oct. 02, 2011
Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life	5 years	5 years
Risk-free interest rate (percent)	0.90%	1.09%
Volatility (percent)	66.00%	59.00%
Dividend yield (percent)	0.00%	0.00%
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life	3 months	3 months
Risk-free interest rate (percent)	0.06%	0.04%
Volatility (percent)	69.00%	62.00%
Dividend yield (percent)	0.00%	0.00%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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