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PROPERTY, PLANT AND EQUIPMENT AND MINERAL PROPERTIES Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Cost	$ 57,915	$ 56,364
Accumulated Depreciation	(35,932)	(32,743)
Net Book Value	21,983	23,621
Nichols Ranch
Property, Plant and Equipment [Line Items]
Cost	29,210	29,210
Accumulated Depreciation	(18,185)	(16,150)
Net Book Value	11,025	13,060
Alta Mesa
Property, Plant and Equipment [Line Items]
Cost	13,626	13,626
Accumulated Depreciation	(4,996)	(4,088)
Net Book Value	8,630	9,538
Equipment and other
Property, Plant and Equipment [Line Items]
Cost	15,079	13,528
Accumulated Depreciation	(12,751)	(12,505)
Net Book Value	$ 2,328	$ 1,023

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