Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2016
Commitments and Contingencies  
Schedule of future minimum payments for noncancellable operating leases extending beyond one year

 

 

 

 

 

(in thousands of dollars)

    

    

 

 

Years Ending December 31, 

 

 

 

 

2017

 

$
1,054

 

2018

 

 
1,118

 

2019

 

 
1,125

 

2020

 

 
375

 

2021

 

 

 —

 

Thereafter

 

 

 —

 

 

 

$
3,672