Share-based Compensation (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Number of Shares
Options outstanding at June 30, 2016		6,385,000
Granted	4,800		4,800
Exercised		(944,000)
Cancelled		(873,000)
Options outstanding at December 31, 2016		4,568,000		6,385,000
Exercisable at December 31, 2016		3,419,000
Vested and expected to vest at December 31, 2016		4,568,000
Weighted-Average Exercise Price Per Share
Options outstanding at June 30, 2016		$ 4.10
Exercised		3.43
Cancelled		4.56
Options outstanding at December 31, 2016		4.15		$ 4.10
Exercisable at December 31, 2016		4.49
Vested and expected to vest at December 31, 2016		$ 4.15
Weighted-Average Remaining Contractual Term
Options outstanding		3 years 9 months 15 days		3 years 8 months 12 days
Exercisable at December 31, 2016		3 years 4 months 10 days
Vested and expected to vest at December 31, 2016		3 years 9 months 15 days
Aggregate Intrinsic Value
Options outstanding		$ 4,742		$ 1,416
Exercisable at December 31, 2016		2,490
Vested and expected to vest at December 31, 2016		$ 4,742