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INVENTORY (Schedule of Inventory, Net) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and components $ 11,281 $ 13,064
Work in progress 15,432 11,387
Spare parts 13,147 18,272
Finished goods 1,363 604
Total inventory [1] $ 41,223 $ 43,327
[1] The total amount of Rotables included in the company spare parts inventory for the years ended December 31, 2020 and 2019 were $9,183 and $8,886, respectively. Inventory related to discontinued operation for the year ended December 31, 2019 was $580.