Income Taxes - Income (Loss) Before Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended											12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	[1]	Dec. 31, 2014	Sep. 30, 2014	[2]	Jun. 30, 2014	[3]	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Income (loss) from operations before income tax:
Domestic loss												$ (35,864)	$ (53,706)	$ (8,976)
Foreign income												2,669	2,740	3,901
Loss before income taxes	$ (8,791)	$ (8,029)	$ (8,549)	$ (7,826)	$ (15,046)		$ (11,269)	$ (11,445)		$ (13,206)		$ (33,195)	$ (50,966)	$ (5,075)

[1] The consolidated operating results for the fourth quarter of fiscal 2015 included a charge of $2.1 million related to the Veloce consideration, a charge of $4.1 million related to restructuring and an impairment charge of $0.5 million related to a strategic investment.

[2] The consolidated operating results for the second quarter of fiscal 2015 included an impairment charge of $2.5 million related to a strategic investment.

[3] The consolidated operating results for the first quarter of fiscal 2015 included a charge of $7.1 million related to the Veloce consideration and a charge of $1.2 million related to restructuring.