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Inventory (Tables)
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory
Our inventory, net of allowance for obsolescence of $21,000 at June 30, 2019 and $19,000 December 31, 2018 consisted of the following amounts:
June 30, 2019December 31, 2018
(in thousands)
Raw materials - current
$24,021 $26,152 
Raw materials - long term, net3,873 3,980 
Finished Goods1,022 1,022 
Work in process
5,259 3,800 
$34,175 $34,954