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Note 4 - Notes Receivable and Advances (Details Textual) - USD ($)			3 Months Ended	12 Months Ended
	Mar. 30, 2026	Mar. 26, 2026	Mar. 31, 2026	Dec. 31, 2025
Sierra Springs Opportunity Fund, Inc. (SSOF) [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner			40.66%	16.99%
Conversion of Sierra Springs Advances Into Sierra Springs Common Stock [Member]
Debt Conversion, Original Debt, Amount	$ 2,000,000	$ 15,150,000	$ 15,150,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)	3,076,923	23,307,692	23,307,692
Debt Conversion, Conversion Rate, Price Per Share (in dollars per share)	$ 0.65	$ 0.65	$ 0.65
Sierra Springs Opportunity Fund, Inc. Note Receivable [Member]
Payments for Advance to Affiliate			$ 5,750,000	$ 9,400,000
Financing Receivable, before Allowance for Credit Loss			$ 0	9,400,000
Note Receivable, Interest Rate			4.50%
Interest Receivable, Current			$ 237,415	$ 0

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- Definition

The price per share of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Carrying amount as of the balance sheet date of current interest earned but not received. Also called accrued interest or accrued interest receivable. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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