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SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Net operating loss carryover | $ 6,295 | $ 5,154
Property and equipment | 3,115 | 3,939
Percentage depletion and contribution carryovers | 1,947 | 1,855
Alternative minimum tax credit carryover |  |
Equity method investment and other | 225 | 246
Deferred compensation liability | 9 | 7
Asset retirement obligations | 327 | 315
Stock-based compensation | 190 | 115
Lease obligations | 30 | 32
Total deferred tax assets | 12,138 | 11,663
Lease assets | (27) | (28)
Total deferred tax liabilities | (27) | (28)
Net deferred tax assets | 12,111 | 11,635
Less valuation allowance | (12,111) | (11,635)
Net deferred tax asset |  |

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