Income Taxes (Components of Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Domestic									$ 49,046	$ 158,025	$ 170,884
Foreign									40,097	(39,617)	41,985
Income before income taxes and equity in earnings of equity-method investees	$ 2,749	$ 39,556	$ 37,656	$ 9,182	$ (77,572)	$ 72,863	$ 80,713	$ 42,404	$ 89,143	$ 118,408	$ 212,869