Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Net property, plant and equipment	$ 46,849	$ 46,916
Turkey [Member]
Net property, plant and equipment	17,989	17,990
Texas [Member]
Net property, plant and equipment	9,631	9,683
New Mexico [Member]
Net property, plant and equipment	19,102	19,102
Corporate [Member]
Net property, plant and equipment	127	141
Uranium Plant [Member]
Net property, plant and equipment	8,455	8,459
Uranium Plant [Member] | Turkey [Member]
Net property, plant and equipment
Uranium Plant [Member] | Texas [Member]
Net property, plant and equipment	8,455	8,459
Uranium Plant [Member] | New Mexico [Member]
Net property, plant and equipment
Uranium Plant [Member] | Corporate [Member]
Net property, plant and equipment
Mineral Rights and Properties [Member]
Net property, plant and equipment	37,070	37,070
Mineral Rights and Properties [Member] | Turkey [Member]
Net property, plant and equipment	17,968	17,968
Mineral Rights and Properties [Member] | Texas [Member]
Net property, plant and equipment
Mineral Rights and Properties [Member] | New Mexico [Member]
Net property, plant and equipment	19,102	19,102
Mineral Rights and Properties [Member] | Corporate [Member]
Net property, plant and equipment
Other Property Plant and Equipment [Member]
Net property, plant and equipment	1,324	1,387
Other Property Plant and Equipment [Member] | Turkey [Member]
Net property, plant and equipment	21	22
Other Property Plant and Equipment [Member] | Texas [Member]
Net property, plant and equipment	1,176	1,224
Other Property Plant and Equipment [Member] | New Mexico [Member]
Net property, plant and equipment
Other Property Plant and Equipment [Member] | Corporate [Member]
Net property, plant and equipment	$ 127	$ 141