Note 1 - Nature of Business and Significant Accounting Policies (Details Textual) - USD ($) shares in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Accounts Receivable, Allowance for Credit Loss, Current	$ 0
Impairment, Long-Lived Asset, Held-for-Use, Total	0	$ 0
Accrued Royalty Income	41,705	78,119
Deposit Assets, Stumpage Agreements	$ 0	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0
Payments of Ordinary Dividends, Common Stock	$ 0	$ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	0
Taxes, Other	88,622	153,125
Oil and Gas [Member]
Capitalized Contract Cost, Net, Total	$ 0	$ 0

Represents the amount of accrued royalty income.

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- Definition

The amount of stumpage agreements held as deposit assets.

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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Amount of tax expense classified as other.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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