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Inventory (Tables)
 3 Months Ended
Mar. 31, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory
Our inventory, net of allowance for obsolescence of $12,000 at March 31, 2016 and December 31, 2015, consisted of the following amounts:
 
March 31, 2016
 
December 31, 2015
 
(in thousands)
Raw materials
$
20,283

 
$
20,726

Finished Goods
1,034

 
1,051

Work in process
3,778

 
5,945

 
$
25,095

 
$
27,722