Summary of Significant Accounting Policies (Details 5) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended								1 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Nov. 13, 2012 2006 Plan	Jun. 30, 2013 2006 Plan item	Jun. 30, 2012 2006 Plan	Jun. 30, 2011 2006 Plan	Jun. 30, 2013 2006 Plan Maximum	Jun. 30, 2013 2006 Plan Stock options item	Jun. 30, 2012 2006 Plan Stock options	Jun. 30, 2011 2006 Plan Stock options	Jun. 30, 2013 2006 Plan Stock options Maximum	Nov. 30, 2012 2006 Plan Restricted stock Officer	Jun. 30, 2013 2006 Plan Restricted stock Officer
Stock-based Compensation
Number of employee share-based compensation plans					1
Additional number of shares authorized for issuance				3,500,000
Common stock authorized for issuance (in shares)				12,000,000
Number of shares of common stock added to the Plan from the Former Plan								5,900,000
Vesting period												4 years	4 years
Exercise period												10 years
Weighted-average assumptions used to estimate the fair value of each stock option
Expected dividend yield assumption (as a percent)									0.00%	0.00%	0.00%
Number of group of awards for which expected term is calculated for and applied									1
Volatility (as a percent)									60.44%	59.70%	58.81%
Risk-free interest rate (as a percent)									0.87%	2.16%	2.43%
Expected life									6 years 3 months 18 days	7 years 1 month 6 days	7 years 2 months 12 days
Weighted-average grant date fair values of options granted (in dollars per share)									$ 8.60	$ 9.00	$ 5.51
Stock compensation expense					$ 12,400,000	$ 9,900,000	$ 5,500,000
Number of Stock Options
Outstanding at the beginning of the period (in shares)									6,442,000
Granted (in shares)									2,047,000
Exercised (in shares)									(666,000)
Forfeited/Canceled (in shares)									(170,000)
Outstanding at the end of the period (in shares)									7,653,000	6,442,000
Vested or unvested and expected to vest at the end of the period (in shares)									7,466,000
Exercisable at the end of the period (in shares)									4,202,000	3,416,000	3,834,000
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)									$ 8.98
Granted (in dollars per share)									$ 15.22
Exercised (in dollars per share)									$ 6.05
Forfeited/Canceled (in dollars per share)									$ 13.87
Outstanding at the end of the period (in dollars per share)									$ 10.79	$ 8.98
Vested or unvested and expected to vest at the end of the period (in dollars per share)									$ 10.70
Exercisable at the end of the period (in dollars per share)									$ 7.97	$ 6.34	$ 5.25
Weighted-Average Remaining Life (in years)
Outstanding at the end of the period									6 years 10 months 20 days
Vested or unvested and expected to vest at the end of the period									6 years 10 months 2 days
Exercisable at the end of the period									5 years 6 months 11 days
Aggregate Intrinsic Value
Outstanding at the end of the period									44,351,000
Vested or unvested and expected to vest at the end of the period									43,991,000
Exercisable at the end of the period									36,220,000
Number of Restricted Stock
Granted (in shares)														50,000
Unvested at the end of the period (in shares)														50,000
Weighted-Average Exercise Price
Granted (in dollars per share)														$ 11.93
Unvested at the end of the period (in dollars per share)														$ 11.93
Additional disclosure for options
Estimated fair value of unvested employee awards, net of estimated forfeitures					17,400,000
Weighted average vesting period of unvested employee awards					2 years
Summary of option activity for options vested
Total fair value of options vested									9,670,000	5,647,000	3,427,000
Total intrinsic value of options exercised									6,737,000	12,476,000	3,467,000
Cash received for exercise of stock options	$ 4,026,000	$ 6,988,000	$ 2,719,000						$ 4,026,000	$ 6,988,000	$ 2,719,000