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Note 11 - Income Taxes - Components of Deferred Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Net operating loss carryover $ 9,012 $ 8,443
Property and equipment 1,244 0
Percentage depletion and contribution carryovers 1,987 2,004
Deferred compensation liability 150 256
Asset retirement obligations 4,220 3,581
Stock-based compensation 428 439
Lease obligations 179 224
Derivatives 0 390
Other 212 249
Total deferred tax assets 17,432 15,586
Property and equipment 0 (6,107)
Derivatives (421) 0
Lease assets (156) (198)
Total deferred tax liabilities (577) (6,305)
Net deferred tax assets 16,855 9,281
Less valuation allowance (16,871) (10,179)
Net deferred tax liability $ (16) $ (898)