v3.8.0.1

Note 8 - Liability Related to Sale of Future Royalties (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Other Liabilities [Table Text Block] |
|  | Year ended December 31, 201 7 |  |  | Period from inception to December 31, 201 7 |
Liability related to sale of future royalties — beginning balance |  | $ | 72,987 |  |  | $ | — |
Proceeds from sale of future royalties |  |  | — |  |  |  | 61,184 |
Non-cash royalty revenue |  |  | (120 | ) |  |  | (127 | )
Non-cash interest expense recognized |  |  | 10,721 |  |  |  | 22,531 |
Liability related to sale of future royalties as of December 31, 2017 |  |  | 83,588 |  |  |  | 83,588 |
Less: current portion |  |  | (604 | ) |  |  | (604 | )
Liability related to sale of future royalties — net of current portion |  | $ | 82,984 |  |  | $ | 82,984 |

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