Unaudited Condensed Consolidated Statements of Operations and Other Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Revenues
Total Revenues	$ 0	$ 298	$ 0	$ 2,196
Cost of revenues	0	13	0	328
Research and development expenses	402	145	430	5,413
Selling, general and administrative expenses	2,090	5,374	13,798	15,037
Total costs and expenses	2,492	5,532	14,228	20,778
Loss from Operations	(2,492)	(5,234)	(14,228)	(18,582)
Other Income (Expense)
Gain (loss) on fixed asset disposals	(20)	25	(19)	111
Gain on lease termination	0	525	0	525
Interest income	1	127	13	507
Other income	0	1,187	6	1,454
Total Other Income (Expense)	(19)	1,864	0	2,597
Income Tax Expense	0	0	(2)	(2)
Net Loss	$ (2,511)	$ (3,370)	$ (14,230)	$ (15,987)
Net loss per common share—basic and diluted	$ (0.37)	$ (0.60)	$ (2.14)	$ (2.40)
Weighted average shares used in computing net loss per common share—basic and diluted	6,859,258	6,523,312	6,651,751	6,461,737
Comprehensive Loss:
Net loss	$ (2,511)	$ (3,370)	$ (14,230)	$ (15,987)
Comprehensive loss	(2,511)	(3,370)	(14,230)	(15,987)
Products and Services [Member]
Revenues
Total Revenues	0	228	0	2,055
Collaborations and Licenses [Member]
Revenues
Total Revenues	0	70	0	89
Grants [Member]
Revenues
Total Revenues	$ 0	$ 0	$ 0	$ 52