Business Combinations (Summary of Unaudited Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2017
Business Acquisition Pro Forma Information [Abstract]
Net revenues	$ 252,532	$ 537,040
Net income (loss)	$ 1,152	$ (7,622)
Net income (loss) per share - basic	$ 0.01	$ (0.07)
Net income (loss) per share - diluted	$ 0.01	$ (0.07)
Shares used in per share calculation - basic	113,621	112,931
Shares used in per share calculation - diluted	119,656	112,931