Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Revenues
Products and services	$ 674	$ 209
Collaborations	213	14
Grants	4	83
Total Revenues	891	306
Cost of revenues	168	0
Research and development expenses	4,444	4,142
Selling, general, and administrative expenses	5,056	4,622
Total costs and expenses	9,668	8,764
Loss from Operations	(8,777)	(8,458)
Other Income (Expense)
Change in fair value of warrant liabilities	(5)	(38)
Interest income	37	8
Total Other Income (Expense)	32	(30)
Income Tax Expense	(22)	(3)
Net Loss	$ (8,767)	$ (8,491)
Net loss per common share—basic and diluted	$ (0.09)	$ (0.10)
Weighted average shares used in computing net loss per common share—basic and diluted	92,391,964	82,993,966