Note 17 - Segments and Geographical Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Product revenue		$ 704	$ 430
Cost of sales		646	270
Research and development		2,653	2,310
Sales and marketing		67	554
General and administrative	[1]	4,253	5,022
Total operating expenses		7,619	8,156
Other segment items	[2]	(46)	6
Net loss		(6,869)	(7,732)
Other segment items	[2]	46	(6)
Regenerative Biotech [Member]
Product revenue		0	0
Cost of sales		0	0
Research and development		2,653	2,310
Sales and marketing		23	4
General and administrative	[1]	4,238	4,927
Total operating expenses		6,914	7,241
Other segment items	[2]	(45)	6
Net loss		(6,869)	(7,247)
Other segment items	[2]	45	(6)
Consumer Health Products [Member]
Product revenue		704	430
Cost of sales		646	270
Research and development		0	0
Sales and marketing		44	550
General and administrative	[1]	15	95
Total operating expenses		705	915
Other segment items	[2]	(1)	(0)
Net loss		0	(485)
Other segment items	[2]	$ 1	$ 0

[1] Certain general and administrative costs (including executive compensation, corporate legal fees, audit fees, investor relations, and insurance) are shared across both segments. For internal reporting purposes, such costs are allocated to each segment based on an estimate of the proportion of management time and corporate resources utilized by each segment. Costs directly attributable to a segment are charged directly to that segment. For the years ended December 31, 2025 and 2024, the Regenerative Biotech segment bore substantially all general and administrative expense, as the Consumer Health Products segment incurred minimal shared corporate overhead.

[2] “Other segment items” for the Regenerative Biotech segment consists primarily of net interest income earned on money market balances and other miscellaneous income, partially offset by interest expense on insurance premium financing. For the Consumer Health Products segment, other segment items consist of foreign currency transaction effects and other minor income items. The other segment items line represents the arithmetic difference between segment revenues, less the significant expense categories disclosed above, and the reported segment net loss, in accordance with ASC 280-10-50-26B.