| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Operating expenses: | ||||||
Research and development | ||||||
24,366 | 21,830 | 22,503 | ||||
General and administrative | ||||||
9,085 | 8,921 | 9,849 | ||||
Total operating expenses | ||||||
33,451 | 30,751 | 32,352 | ||||
Loss from operations | ||||||
-33,451 | -30,751 | -32,352 | ||||
Interest income | ||||||
313 | 447 | 170 | ||||
Interest expense | ||||||
23 | 19 | 528 | ||||
Interest expense - related party | ||||||
- | - | 121 | ||||
Australian research and development incentives | ||||||
132 | 756 | 1,715 | ||||
Foreign currency gains (loss) | ||||||
126 | -835 | 759 | ||||
Change in fair value of warrant liability | ||||||
- | -7,284 | -473 | ||||
Net loss | ||||||
-32,903 | -23,118 | -29,884 | ||||
Net loss | ||||||
- | - | -29,727 | ||||
Income taxes | ||||||
-3 | 20 | -157 | ||||
Net loss | ||||||
-32,900 | -23,138 | - | ||||
Dividend attributable to down round feature of warrants | ||||||
359 | - | - | ||||
Accretion of preferred stock to redemption value | ||||||
- | - | 244 | ||||
Net loss attributable to common stockholders | ||||||
-33,259 | -23,138 | -29,971 | ||||
Net Loss Per Share | ||||||
Basic (in dollars per share) | ||||||
-1.47 | -1.64 | -3.27 | ||||
Diluted (in dollars per share) | ||||||
-1.47 | -2.11 | -3.31 | ||||
Weighted Average Number of Shares Outstanding, Diluted [Abstract] | ||||||
Basic (in shares) | ||||||
22,582 | 14,144 | 9,161 | ||||
Diluted (in shares) | ||||||
22,582 | 14,412 | 9,188 | ||||