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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2015
Commitments and Contingencies  
Schedule of future minimum payments for noncancellable operating leases extending beyond one year

                                                                                                                                                                                    

(in thousands of dollars)

 

 

 

Years Ending December 31,

 

 

 

 

2016

 

$

945 

 

2017

 

 

1,038 

 

2018

 

 

1,101 

 

2019

 

 

1,122 

 

2020

 

 

377 

 

Thereafter

 

 

 

​  

​  

 

 

$

4,583 

 

​  

​  

​  

​