SHARE-BASED COMPENSATION (Details 4) (USD $)	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Stock options
Modification of certain fully vested stock options
Increase in contractual term (in years)			2.15
Increase in share-based compensation expense			$ 400,000
Accelerated vesting of unvested stock options approved by the Board of Directors
Number of shares affected by award acceleration (in shares)			360,000
Accelerated recognition of share-based compensation expense			1,400,000
Unrecognized compensation cost	11,200,000
Unrecognized compensation cost, period for recognition (in years)	1.89
Weighted Average:
Expected option term (in years)	4.61	4.66	4.53
Expected volatility (as a percent)	54.91%	56.04%	51.07%
Risk-free interest rate (as a percent)	1.76%	2.23%	2.63%
Annual dividend yield (as a percent)	0.00%	0.00%	0.00%
Restricted stock and RSUs
Accelerated vesting of unvested stock options approved by the Board of Directors
Unrecognized compensation cost	$ 12,000,000
Unrecognized compensation cost, period for recognition (in years)	1.76

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Represents the increase in share-based compensation expense due to accelerated vesting of all unvested stock options previously issued to the Company's former Chief Technology Officer.

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Represents the number of shares affected due to accelerated vesting of all unvested stock options previously issued to the Company's former Chief Technology Officer.

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Represents the increase (decrease) in the contractual term affected by the modification of an equity-based compensation plan.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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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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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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