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Equity compensation plans (Tables)
 6 Months Ended
Jun. 30, 2017
Equity compensation plans  
Schedule of changes in outstanding LTIP notional units

 

 

 

 

 

 

 

 

 

 

 

Grant Date

 

 

 

 

 

Weighted-Average

 

 

    

Units

    

Fair Value per Unit

 

Outstanding at December 31, 2016

 

2,101,118

 

 

2.08

 

Granted

 

1,817,463

 

 

2.38

 

Vested and redeemed

 

(973,091)

 

 

2.22

 

Forfeitures

 

(24,226)

 

 

2.32

 

Outstanding at June 30, 2017

 

2,921,264

 

$

2.22