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Inventory, net (Tables)
12 Months Ended
Dec. 31, 2014
Inventory, net  
Schedule of inventory, net of reserves

 

Inventory, net of reserves, consisted of the following amounts (in thousands):

 

 

 

December 31,

 

 

 

2014

 

2013

 

Parts and supplies

 

$

269,370 

 

$

233,216 

 

Work in progress

 

100,499 

 

139,763 

 

Finished goods

 

33,702 

 

40,948 

 

Inventory, net

 

$

403,571 

 

$

413,927