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Inventory (Tables)
9 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory
Our inventory, net of allowance for obsolescence of $20,785 and $15,000 at September 30, 2018 and December 31, 2017, respectively, consisted of the following amounts:
September 30, 2018December 31, 2017
(in thousands)
Raw materials - current
$15,080 $22,813 
Raw materials - long term 3,815 2,829 
Finished Goods 1,022 1,022 
Work in process
2,963 2,389 
$22,880 $29,053