Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Stock-based compensation	$ 4,373	$ 3,124
Unrecognized derivative losses	3,248	0
Net operating loss carryforwards	2,870	9,725
Other	31	31
Less: Valuation allowance	0	0
Net deferred tax assets	10,522	12,880
Crude oil and natural gas properties, principally due to differences in basis and depreciation and the deduction of intangible drilling costs for tax purposes	(66,324)	(51,778)
Net deferred tax liabilities	$ (55,802)	$ (38,898)

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

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