CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets:
Cash	$ 493	$ 862
Royalty receivable	6	82
Collaboration revenue receivable - related party	115	78
License fee receivable - related party	800	0
Prepaid expenses and other current assets	209	122
Income tax receivable	0	34
Total current assets	1,623	1,178
Income tax receivable	0	34
Property, plant and equipment, net (Note 6)	498	540
Intangible asset, net (Note 3)	78	810
Total assets	2,199	2,562
Liabilities:
Accounts payable	284	237
Accrued expenses (Note 7)	721	585
Loan under CARES Act	164	0
Other current liabilities (Note 11)	16	29
Sales returns liability (Note 4)	0	223
Total current liabilities	1,185	1,074
Convertible debt - related party (Note 8)	6,000	6,000
Accrued interest - related party (Note 8)	566	229
Loan under CARES Act	105	0
Total liabilities	7,856	7,303
Commitments and contingencies
Stockholders' deficit:
Common stock - $0.01 par value per share; 100,000 shares authorized, 21,650 and 21,300 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	216	213
Additional paid-in capital	383,088	383,042
Accumulated deficit	(388,961)	(387,996)
Total stockholders' deficit	(5,657)	(4,741)
Total liabilities and stockholders' deficit	$ 2,199	$ 2,562