Short-term investments |
6 Months Ended |
|---|---|
Jun. 30, 2019 | |
| Short-term investments | |
| Short-term investments | 3 Short-term investments Short-term investments are comprised of term deposits issued in US currency, earning interest ranging from 2.47% to 2.48%, maturing between September 30, 2019 and October 25, 2019. |