Note 1 - Nature of Business and Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Equity Securities, FV-NI, Current	$ 0	$ 502,832
Accounts Receivable, Allowance for Credit Loss, Current	0
Impairment, Long-Lived Asset, Held-for-Use, Total	$ 0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	39.60%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	3.50%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term	2 years
Accrued Royalty Income	$ 126,423	50,379
Deposit Assets, Stumpage Agreements	$ 0	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	310,794	0
Payments of Ordinary Dividends, Common Stock	$ 0	$ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	0	0
Taxes, Other	140,840	146,095
Oil and Gas [Member]
Capitalized Contract Cost, Net, Total	0	0
Mutual Fund [Member]
Equity Securities, FV-NI, Current	$ 0	$ 502,832

Represents the amount of accrued royalty income.

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The amount of stumpage agreements held as deposit assets.

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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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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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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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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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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Rate of weighted-average expected volatility for award under share-based payment arrangement.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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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