Quarterly Financial Data (unaudited)

12 Months Ended

Mar. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (unaudited)

12. Quarterly Financial Data (unaudited)

The following quarterly financial data, in the opinion of management, fairly presents the results for the periods presented (in thousands, except per share data):

	Year Ended March 31, 2016
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenue	$	306		$	301		$	328		$	548
Net loss		(8,491	)		(11,257	)		(10,455	)		(8,372	)
Net loss per common share - basic and diluted		(0.10	)		(0.12	)		(0.11	)		(0.09	)
Weighted average shares used in computing net    loss per common share—basic and diluted		82,993,966			92,385,150			92,396,358			92,402,668
	Year Ended March 31, 2015
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenue	$	99		$	50		$	155		$	267
Net loss		(6,433	)		(8,858	)		(6,993	)		(7,798	)
Net loss per common share - basic and diluted		(0.08	)		(0.11	)		(0.09	)		(0.10	)
Weighted average shares used in computing net    loss per common share—basic and diluted		78,241,373			78,933,884			80,491,120			80,946,849