CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets:
Cash	$ 1,210	$ 862
Royalty receivable	30	82
Collaboration revenue receivable from related party	5	78
Prepaid expenses and other current assets	75	122
Income tax receivable	68	34
Total current assets	1,388	1,178
Income tax receivable		34
Property, plant and equipment, net (Note 6)	525	540
Intangible asset, net (Note 3)	91	810
Total assets	2,004	2,562
Liabilities:
Accounts payable	108	237
Accrued expenses (Note 7)	631	585
Other current liabilities (Note 11)	6	29
Sales returns liability	223	223
Convertible debt to related party, net of discounts (Note 8)	6,000	0
Accrued interest to related party (Note 8)	341	0
Total current liabilities	7,309	1,074
Convertible debt to related party, net of discounts (Note 8)	0	6,000
Accrued interest to related party (Note 8)	0	229
Total liabilities	7,309	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 March 31, 2020 and December 31, 2019, respectively	216	213
Additional paid-in capital	383,070	383,042
Accumulated deficit	(388,591)	(387,996)
Total stockholders' deficit	(5,305)	(4,741)
Total liabilities and stockholders' deficit	$ 2,004	$ 2,562