Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 133,438	$ 13,526
Accounts receivable	250	3,619
Prepaid expenses and other current assets	1,903	453
Total current assets	135,591	17,598
Property and equipment, net	662	210
Right-of-use assets, net	2,591	1,990
Intangible assets, net	15,794	17,093
Other long-term assets	72	141
Total assets	154,710	37,032
Current liabilities:
Accounts payable	1,871	852
Current portion of operating lease liability	1,699	841
Liability related to sale of future royalties, current portion	3,008	2,916
Other accrued liabilities	3,724	4,565
Total current liabilities	10,302	9,174
Operating lease liability, net of current portion	1,032	1,472
Liability related to sale of future royalties, net of current portion	11,698	13,416
Other long-term liabilities		18
Total liabilities	23,032	24,080
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock: $0.0001 par value; 5,000,000 shares authorized; none issued and outstanding as of September 30, 2020 and December 31, 2019
Common stock: $0.0001 par value; 150,000,000 shares authorized; 109,468,945 and 48,254,994 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	11	5
Additional paid-in capital	266,687	129,608
Accumulated deficit	(135,020)	(116,661)
Total stockholders’ equity	131,678	12,952
Total liabilities and stockholders’ equity	$ 154,710	$ 37,032