Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Total revenues	$ 314,000	$ 392,000	$ 904,000	$ 753,000
Operating expenses:
Research and development	1,762,000	1,931,000	5,999,000	5,387,000
Selling, general and administrative	4,292,000	4,477,000	11,689,000	10,434,000
Total operating expenses	7,895,000	6,585,000	21,151,000	16,145,000
Loss from operations	(7,581,000)	(6,193,000)	(20,247,000)	(15,392,000)
Interest expense	(23,000)	(3,000)	(32,000)	(3,000)
Other income, net		119,000	83,000	339,000
Change in fair value of common stock warrant liabilities	1,130,000	(7,777,000)	6,212,000	(6,790,000)
Loss on extinguishment of warrant liability	(682,000)		(635,000)
Offering costs		(336,000)		(702,000)
Net loss before income taxes	(7,156,000)	(14,190,000)	(14,619,000)	(22,548,000)
Income tax benefit (provision)	(9,000)	3,000	(15,000)	(14,000)
Net loss	(7,165,000)	(14,187,000)	(14,634,000)	(22,562,000)
Net loss attributable to non-controlling interest	(774,000)		(1,081,000)
Net loss attributable to common stockholders	$ (6,391,000)	$ (14,187,000)	$ (13,553,000)	$ (22,562,000)
Net loss per share attributable to common stockholders:
Basic and diluted	$ (0.60)	$ (2.04)	$ (1.42)	$ (4.03)
Weighted-average number of shares used in per share calculations:
Basic and Diluted	10,719,618	6,942,612	9,570,259	5,596,545
Other comprehensive loss, net of tax
Unrealized losses on available-for-sale securities		$ (1,000)	$ (1,000)
Other comprehensive loss		(1,000)	(1,000)
Comprehensive loss attributable to common stockholders	$ (6,391,000)	(14,188,000)	(13,554,000)	$ (22,562,000)
Product
Revenues:
Total revenues	245,000	216,000	630,000	485,000
Operating expenses:
Cost of product revenues	1,841,000	177,000	3,463,000	324,000
License
Revenues:
Total revenues	10,000	17,000	110,000	17,000
Royalty
Revenues:
Total revenues	16,000		58,000
Contract Research And Government Grants
Revenues:
Total revenues	$ 43,000	$ 159,000	$ 106,000	$ 251,000