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Equity compensation plans (Tables)
12 Months Ended
Dec. 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, 2018

 

3,952,201

$

2.09

Granted

 

1,724,081

2.72

Vested and redeemed

 

(2,071,335)

2.10

Forfeitures

 

(26,855)

2.17

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

 

(31,929)

2.42

Outstanding at December 31, 2020

 

3,710,340

$

2.45