Note 4 - Related Party Transactions - Schedule of Related Party Transactions (Details) - Revolving Credit Facility [Member] - Boyalife Asset Holding II [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 28, 2023	Jul. 31, 2023	Mar. 31, 2023	Jan. 31, 2023
Debt Instrument, Maturity Date	Dec. 31, 2023	Dec. 31, 2023
Stated interest rate	22.00%	22.00%
Conversion price (in dollars per share)	$ 1.07	$ 6.30	$ 1.07	$ 1.07	$ 2.65	$ 6.30
Face value	$ 7,278,000	$ 7,000,000
Debt discount	(2,461,000)	(1,223,000)				$ (2,350,000)
Carrying value	$ 4,817,000	$ 5,777,000