Summary of Significant Accounting Policies - Net Income (Loss) Per Common Share and Outstanding Convertible Notes - Diluted Share Impact (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Aug. 31, 2016	Jan. 31, 2016	Apr. 17, 2014	Feb. 28, 2013	Aug. 01, 2011
Numerator:
Net income (loss) used to compute basic and diluted net income (loss) per share	$ (5,029)	$ 756	$ (24,324)	$ (18,297)
Denominator:
Weighted average shares used to compute basic net income (loss) per share	82,913	80,860	82,268	80,320
Weighted average shares used to compute diluted net income (loss) per share	82,913	82,071	82,268	80,320
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)			16,380	13,917
3.75% Convertible Notes
Denominator:
Interest rate (as a percent)	3.75%		3.75%		3.75%	3.75%			3.75%
Conversion shares outstanding principal amount excluded in the potentially diluted shares				10,600
3.50% Convertible Notes
Denominator:
Interest rate (as a percent)	3.50%	3.50%	3.50%	3.50%				3.50%
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)			8,378	8,378
3.50% Series A Convertible Notes
Denominator:
Weighted average effect of convertible notes		500
Interest rate (as a percent)	3.50%	3.50%	3.50%	3.50%			3.50%
Conversion shares outstanding principal amount excluded in the potentially diluted shares			13,200
Stock options
Denominator:
Weighted average effect of dilutive awards		101
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)			2,510	1,981
RSUs, PSUs and MSUs
Denominator:
Weighted average effect of dilutive awards		610
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)			5,492	3,558