Note 4 - Related Party Transactions - Schedule of Related Party Transactions (Details) - Boyalife Asset Holding II [Member] - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Jan. 31, 2023
Revolving Credit Facility [Member]
Maturity date		Dec. 31, 2023
Stated interest rate	22.00%	22.00%
conversion price (in dollars per share)	$ 0.38	$ 0.79	$ 0.79
face value		$ 7,278,000
Discount debt		(0)		$ 2,789,000
gross value		7,278,000
December 31, 2022		0		$ (2,789,000)
December 31, 2022		$ 7,278,000
Convertible Debt [Member]
Maturity date	Mar. 31, 2024
Stated interest rate	22.00%
conversion price (in dollars per share)	$ 0.38
face value	$ 6,000,000
Discount debt	1,794,000
gross value	4,206,000
December 31, 2022	(1,794,000)
December 31, 2022	$ 4,206,000