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Commitments (Tables)
 12 Months Ended
Dec. 31, 2016
Commitments  
Schedule of future minimum purchase requirements under terms of long-term supply contracts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Due in

 

 

 

 

 

    

2017

    

2018

    

2019

    

2020

    

2021

    

Thereafter

 

Raw and other materials

 

$
19,190

 

$
21,049

 

$
781

 

$
781

 

$
781

 

$

 —

 

Information systems and services

 

 
2,185

 

 
2,250

 

 
710

 

 
65

 

 

 —

 

 

 —

 

Total contractual cash obligations

 

$
21,375

 

$
23,299

 

$
1,491

 

$
846

 

$
781

 

$

 —

 

 

Schedule of total payments made for purchases under long-term supply contracts

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31

 

 

    

2016

    

2015

    

2014

 

Raw and other materials

 

$
21,178

 

$
27,832

 

$
38,096

 

Information systems and services

 

 
1,384

 

 
1,871

 

 
2,163

 

Total payments

 

$
22,562

 

$
29,703

 

$
40,259