Note 3 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

Origin of loss before taxes	2024			2023
United States	$	(1,740	)	$	(1,772	)
Foreign		(126	)		303
Loss before income taxes	$	(1,866	)	$	(1,469	)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2024			2023
Current:
Federal	$	—		$	—
State		(51	)		(19	)
Foreign		(22	)		(55	)
Total current		(73	)		(74	)
Deferred:
Federal		(2	)		2
State		(2	)		3
Total deferred		(4	)		5
Income tax expense	$	(77	)	$	(69	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2024			2023
Provision at the U.S. federal statutory rate		21.0	%		21.0	%
State taxes, net of federal benefit		4.9	%		4.7	%
Foreign tax rate differential		0.2	%		(0.6	)%
Valuation allowance		105.6	%		(4.9	)%
Chile outside basis differential		(0.8	)%		—	%
Italy IRES/IREP		—	%		(3.8	)%
Accrual to return		2.1	%		(5.8	)%
Research and development credit		11.2	%		5.4	%
State rate change		0.9	%		(1.4	)%
Share based compensation		(9.0	)%		(6.7	)%
Net Operating Loss expiration		(144.3	)%		—	%
Other Deferred true up		6.4	%		(6.6	)%
Global Intangible Low-Taxed Income (GILTI) inclusion		—	%		(4.4	)%
Other		(1.1	)%		(1.7	)%
Income tax expense effective rate		(2.9	)%		(4.8	)%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2024			2023
Deferred tax assets:
Stock compensation expense	$	80		$	250
Royalty accruals		10			10
Bad debt allowance		51			52
Net operating loss carryforwards		9,067			12,048
Credit carry-forwards		1,472			1,134
Inventory reserve		154			153
Depreciation		433			548
Research and Development Costs		2,233			1,053
Other		399			606
Total deferred tax assets		13,899			15,854
Deferred tax liabilities:
Goodwill		(296	)		(238	)
Intangible assets		(82	)		(89	)
Total deferred tax liabilities		(378	)		(327	)
Net deferred tax asset before valuation allowance		13,521			15,527
Valuation allowances for deferred tax assets		(13,697	)		(15,699	)
Net deferred tax liability	$	(176	)	$	(172	)

Summary of Valuation Allowance [Table Text Block]

Year	Balance at January 1		Charged to costs and expenses			(Deductions)/Other		Balance at December 31
2023	$	15,627		72			—	$	15,699
2024	$	15,699		(2,002	)		—	$	13,697

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

Year	Balance at January 1		Change in positions taken in a current period		Balance at December 31
2023	$	293		33	$	326
2024	$	326		144	$	470