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Inventory
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventory Inventory
Our inventory, net of allowance for obsolescence of $37,000 at June 30, 2020 and $24,000 at December 31, 2019, consisted of the following amounts:
(in thousands)
June 30, 2020December 31, 2019
Raw materials - current$14,800  $19,388  
Work-in-process961  1,692  
Inventory - current15,761  21,080  
Raw materials - long term (net of allowances of $37 and $24, respectively)
1,123  1,068  
Inventory - total$16,884  $22,148  

Our long-term inventory consists of raw materials that remain viable but that the Company does not expect to sell or use within the year. During the six months ended June 30, 2020 and 2019, there were no write-offs of obsolete inventory against the allowance for obsolescence.