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Inventories
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Inventories

5. Inventories

 

     2013     2012  

Raw materials

   $ 19,753      $ 2,508   

Work in process

     3,172        —    

Finished goods

     2,987        1,817   

Obsolescence allowance

     (536     (427
  

 

 

   

 

 

 
   $ 25,376      $ 3,898   
  

 

 

   

 

 

 

Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $(0.1) million and $0.1 million during 2013 and 2012, respectively. Items charged to the allowance for inventory write-offs were $0.1 million during 2012, with no such write-offs in 2013.