Note 18 - Supplemental Crude Oil and Natural Gas Disclosures (Unaudited) - Net Capitalized Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Proved properties	$ 699,701	$ 367,372
Unproved properties	108,392	152,741
Total capitalized costs	808,093	520,113
Less: accumulated depletion	(82,478)	(17,477)
Net capitalized costs	$ 725,615	$ 502,636

Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

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The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation.

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Net amount of capitalized costs relating to oil and gas producing activities.

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Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table.

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Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table.

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