Consolidated Statements of Operations and Other Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Total Revenues	$ 2,196	$ 3,091
Cost of revenues	328	482
Research and development expenses	5,284	14,752
Selling, general, and administrative expenses	18,059	15,131
Total costs and expenses	23,671	30,365
Loss from Operations	(21,475)	(27,274)
Other Income (Expense)
Gain (loss) on fixed asset disposals	113	(63)
Gain on lease termination	525	0
Interest income	594	705
Other income (expense)	1,535	0
Total Other Income (Expense)	2,767	642
Income Tax Expense	(2)	(3)
Net Loss	$ (18,710)	$ (26,635)
Net loss per common share—basic and diluted	$ (0.14)	$ (0.23)
Weighted average shares used in computing net loss per common share—basic and diluted	129,556,156	115,379,902
Comprehensive Loss:
Net Loss	$ (18,710)	$ (26,635)
Comprehensive Loss	(18,710)	(26,635)
Products and Services [Member]
Revenues
Total Revenues	2,055	2,333
Collaborations and Licenses [Member]
Revenues
Total Revenues	89	171
Grants [Member]
Revenues
Total Revenues	$ 52	$ 587