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Stock And Employee Benefit Plans (Schedule Of Weighted Average Assumptions) (Details)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	56.90%	55.90%	55.40%
Risk-free interest rate	0.90%	1.60%	2.30%
Expected term (in years)	5 years 1 month 6 days	5 years 1 month 6 days	5 years

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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