Note 3 - Summary of Significant Accounting Policies (Details Textual)	1 Months Ended	3 Months Ended		6 Months Ended
	Dec. 31, 2023 USD ($)	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 shares	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 shares
Number of Operating Segments				2
Cash, Uninsured Amount		$ 5,200,000		$ 5,200,000
Marketable Securities, Current	$ 2,976,573	0		0
Accounts Receivable, Allowance for Credit Loss	10,000	$ 10,000		$ 10,000
Weighted Average Number of Shares Outstanding, Basic (in shares) | shares		79,966,833	72,333,656	80,412,397	72,048,223
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares				3,128,652	4,142,155
Marketable Securities	2,976,573
US Treasury Securities [Member]
Marketable Securities, Current	3,000,000
Money Market Funds [Member]
Cash Equivalents, at Carrying Value	3,000,000	$ 5.8		$ 5.8
Milestone Medical Inc. [Member]
Payments to Acquire Additional Interest in Subsidiaries	$ 214,000