v3.20.1

Equity compensation plans (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Equity compensation plans |
Schedule of changes in outstanding LTIP notional units |
|  |  |  |  |  |  | Grant Date |
|  |  |  |  |  |  | Weighted-Average |
|  | Notional Shares |  |  |  |  | Fair Value per Notional Share |
Outstanding at December 31, 2019 |  | 3,578,092 |  |  |  | $ | 2.38 |
Granted |  | 1,866,748 |  |  |  |  | 2.49 |
Vested and redeemed |  | (1,702,571) |  |  |  |  | 2.34 |
Forfeitures |  | (23,388) |  |  |  |  | 2.40 |
Outstanding at March 31, 2020 |  | 3,718,881 |  |  |  | $ | 2.45 |

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