Note 6 - Related Party Transactions - Summarizes the Note (Details) - Boyalife Asset Holding II [Member] - Convertible Debt [Member] - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt Instrument, Maturity Date	Mar. 06, 2022	Mar. 06, 2022
State interest rate	22.00%	22.00%
Conversion price (in dollars per share)	$ 1.80	$ 1.80
Face value	$ 10,000,000	$ 10,000,000
Remaining debt discount	(755,000)	(4,065,000)
Carrying Value	$ 9,245,000	$ 5,935,000

The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Amount, after accumulated amortization, of debt discount.

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The amount for notes payable (written promise to pay), due to related parties.

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