Basis of Presentationtion (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Basis of Presentation
Loss from operations	$ (5,856)	$ (3,757)	$ (19,325)	$ (16,787)
Cash and cash equivalents	13,470	$ 40,890	13,470	$ 40,890	$ 32,221	$ 27,859
Cash and cash equivalents including restricted cash	18,500		18,500
Cash and cash equivalents and restricted cash excluding outstanding credit facility	$ 8,900		$ 8,900		$ 19,300