Note 4 - Related Party Transactions - Schedule of Related Party Transactions (Details) - Revolving Credit Facility [Member] - Boyalife Asset Holding II [Member] - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Jan. 31, 2023
Maturity Date	Dec. 31, 2023	Dec. 31, 2023
Stated Interest Rate	22.00%	22.00%
Conversion Price (in dollars per share)	$ 2.65	$ 6.30	$ 6.30
Face Value	$ 7,278,000	$ 7,000,000
Debt Discount	(779,000)	(1,223,000)	$ (2,350,000)
Carrying Value	$ 6,499,000	$ 5,777,000