Note 8 - Net Loss Per Share - Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Net loss attributable to BeyondSpring Inc.—basic and diluted | $ (60,737) | $ (5,389) |
| Weighted average number of ordinary shares outstanding —basic and diluted (in shares) | 19,916,446 | 15,750,000 |
| Net loss per share —basic and diluted (in dollars per share) | $ (3.05) | $ (0.34) |