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Business Combinations (Summary of Unaudited Pro Forma Financial Information) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Business Acquisition Pro Forma Information [Abstract]        
Net revenues $ 148,664 $ 157,798 $ 462,689 $ 488,462
Net income (loss) $ (2,774) $ (17,833) $ (7,560) $ (59,341)
Net earnings (loss) per share - basic $ (0.03) $ (0.17) $ (0.07) $ (0.58)
Net earnings (loss) per share - diluted $ (0.03) $ (0.17) $ (0.07) $ (0.58)
Shares used in per share calculation - basic 109,213 104,104 107,531 102,486
Shares used in per share calculation - diluted 109,213 104,104 107,531 102,486