Share-based Compensation - Assumptions used and Rollforward (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Weighted average assumptions used to estimate fair values of the stock options granted and the estimated annual forfeiture rates used to recognize the associated compensation expense and the weighted average fair value of the options granted
Risk-free interest rate (as a percent)	1.70%	1.70%
Expected volatility (as a percent)	48.30%	52.10%
Expected dividend yield (as a percent)	0.00%	0.00%
Forfeiture rate (as a percent)	6.50%	6.50%
Expected term (in years)	5 years 2 months 12 days	5 years 6 months
Weighted average fair value (in dollars per share)	$ 26.24	$ 17.67
Awards
Outstanding at the beginning of the period (in shares)	1,975
Granted (in shares)	58
Exercised (in shares)	(141)
Forfeited, expired or repurchased (in shares)	(37)
Outstanding at the end of the period (in shares)	1,855
Vested and expected to vest, Awards (in shares)	1,817
Exercisable at end of year (in shares)	1,291
Stock options, Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 15.39
Granted (in dollars per share)	59.20
Exercised (in dollars per share)	16.34
Forfeited, expired or repurchased (in dollars per share)	31.93
Outstanding at the end of the period (in dollars per share)	16.36
Vested and expected to vest, Weighted-Average Exercise Price (in dollars per share)	16.00
Exercisable at the end of the period (in dollars per share)	$ 10.37
Aggregate Intrinsic Value
Exercised (in dollars)	$ 4,078
Outstanding at the end of the period (in dollars)	45,523
Vested and expected to vest, Aggregate Intrinsic Value	45,143
Exercisable at the end of the period (in dollars)	$ 38,566
Weighted Average Remaining Contractual Life (yrs.)
Outstanding at the end of the period (in years)	6 years 8 months 12 days
Vested and expected to vest, Weighted Average Remaining Contractual Life	6 years 8 months 12 days
Exercisable at the end of the period (in years)	6 years