Note 17 - Business Acquisition (Details Textual) - USD ($)		3 Months Ended						9 Months Ended
	Sep. 08, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Goodwill		$ 610,000						$ 610,000		$ 0
Revenue from Contract with Customer, Excluding Assessed Tax		242,000			$ 0			242,000	$ 0
Net Income (Loss) Attributable to Parent		(5,890,000)	$ (17,581,000)	$ (5,512,000)	(1,623,000)	$ (7,897,000)	$ (6,528,000)	(28,982,000)	(16,048,000)
Dura Medical [Member]
Business Combination, Consideration Transferred	$ 3,300,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred	100,000	100,000
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount	$ 3,000,000
Business Combination, Excluded from Purchase Price, Contingent Consideration, Term (Year)	3 years
Business Combination, Acquisition-Related Cost, Expense								100,000
Amortization		24,000
Goodwill	$ 610,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles		$ 100,000			300,000			500,000	$ 900,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Finders Fees					$ 100,000
Revenue from Contract with Customer, Excluding Assessed Tax								242,000
Net Income (Loss) Attributable to Parent								$ 16,000
Dura Medical [Member] | Class A Units [Member]
Business Combination, Excluded From Purchase Price, Issuance of Shares (in shares)	6,188