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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Net property, plant and equipment $ 20,529 $ 20,553
Turkey [Member]    
Net property, plant and equipment 7 8
Texas [Member]    
Net property, plant and equipment 3,594 3,604
Alabama [Member]    
Net property, plant and equipment 8,972 8,973
New Mexico [Member]    
Net property, plant and equipment 7,806 7,806
Corporate    
Net property, plant and equipment 150 162
Uranium Plant [Member]    
Net property, plant and equipment 3,143 3,256
Uranium Plant [Member] | Texas [Member]    
Net property, plant and equipment 3,143 3,256
Mineral Rights and Properties [Member]    
Net property, plant and equipment 16,778 16,779
Mineral Rights and Properties [Member] | Alabama [Member]    
Net property, plant and equipment 8,972 8,973
Mineral Rights and Properties [Member] | New Mexico [Member]    
Net property, plant and equipment 7,806 7,806
Other Property Plant and Equipment [Member]    
Net property, plant and equipment 608 518
Other Property Plant and Equipment [Member] | Turkey [Member]    
Net property, plant and equipment 7 8
Other Property Plant and Equipment [Member] | Texas [Member]    
Net property, plant and equipment 451 348
Other Property Plant and Equipment [Member] | Corporate    
Net property, plant and equipment $ 150 $ 162