Business Combinations (Summary of Unaudited Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition Pro Forma Information [Abstract]
Net revenues	$ 1,076,988	$ 1,205,696
Net loss	$ (27,007)	$ (143,835)
Net loss per share - basic and diluted	$ (0.24)	$ (1.33)
Shares used in per share calculation - basic and diluted	114,221	108,275