Net Loss Per Share (Schedule of Earnings Per Share, Basic and Diluted) (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
Earnings Per Share [Abstract]
Net loss	$ (5,604)	$ (10,784)	$ (20,694)	$ (29,544)
Weighted-average shares used in per share calculation - basic and diluted	109,213	104,104	107,531	102,486
Net loss per share - basic and diluted	$ (0.05)	$ (0.10)	$ (0.19)	$ (0.29)