Stockholder's Equity (Deficit) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Number of Options
Balance at the beginning of period	6,416,000	7,521,000	7,055,000
Exercised	(1,217,000)	(1,987,000)	(1,044,000)
Granted	1,876,000	1,939,000	2,343,000
Forfeited or expired	(1,044,000)	(1,057,000)	(833,000)
Balance at the end of period	6,031,000	6,416,000	7,521,000
Weighted Average Exercise Price per Share
Balance at the beginning of period	$ 4.78	$ 5.05	$ 5.75
Exercised	$ 6.26	$ 2.87	$ 1.58
Granted	$ 16.31	$ 5.86	$ 5.27
Forfeited or expired	$ 8.77	$ 12.27	$ 15.98
Balance at the end of period	$ 7.37	$ 4.78	$ 5.05
Number of performance options granted (in shares)		1,699,585	1,699,585