Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Income Taxes
Income tax expense (benefit)	$ (2,743)	$ 17,973	$ 20,270	$ 60,208
Effective income tax rate (as a percent)	33.40%	33.10%	32.90%	34.20%
Unrecognized tax benefits	$ 5,800		$ 5,800		$ 578
Unrecognized tax benefits cumulative interest and penalties recorded	$ 0		$ 0		$ 0