Stock-based Compensation (Details 2) - Jun. 30, 2015 - $ / shares	Total
Stock options exercisable and vested
Number of Shares	3,310,158
Weighted-Average Remaining Life	4 years 11 months 27 days
$20.00
Stock options exercisable and vested by exercise price range
Exercise price (in dollars per share)	$ 20.00
Stock options exercisable and vested
Number of Shares	3,160,158
Weighted-Average Remaining Life	4 years 11 months 16 days
$28.80
Stock options exercisable and vested by exercise price range
Exercise price (in dollars per share)	$ 28.80
Stock options exercisable and vested
Number of Shares	150,000
Weighted-Average Remaining Life	5 years 9 months 26 days