Note 3 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

Origin of income before taxes	2021			2020
United States	$	798		$	(3,411	)
Foreign		(730	)		(810	)
Income (loss) before income taxes	$	68		$	(4,221	)

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

	2021			2020
Current:
Federal	$	—		$	—
State		(9	)		(7	)
Foreign		—			(88	)
Total current		(9	)		(95	)
Deferred:
Federal		—			22
State		(5	)		16
Total deferred		(5	)		38
Income tax expense	$	(14	)	$	(57	)

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

	2021			2020
Provision at the U.S. federal statutory rate		21.0	%		21.0	%
State taxes, net of federal benefit		(15.5	)%		1.5	%
Foreign tax rate differential		(30.2	)%		0.5	%
Valuation allowance		(1504.6	)%		(13.9	)%
Chile outside basis differential		34.4	%		—	%
PPP Loan Forgiveness		(484.6	)%		—	%
Accrual to return		(329.3	)%		—	%
Research and development credit		(144.9	)%		—	%
State rate change		(124.0	)%		(6.5	)%
China deferred adjustment		1006.0	%		—	%
China enterprise tax		—	%		(2.1	)%
Share based compensation		1590.3	%		(2.0	)%
Other true up		—	%		(2.7	)%
Intangible assets impairment and other non-deductibles		—	%		1.8	%
Other		2.0	%		1.0	%
Income tax (expense) benefit effective rate		20.6	%		(1.4	)%

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

	2021			2020
Deferred tax assets:
Stock compensation expense	$	173		$	1,240
Goodwill		591			986
Royalty accruals		10			560
Bad debt allowance		51			338
Net operating loss carryforwards		11,950			10,959
Credit carry-forwards		992			841
Inventory reserve		217			206
Depreciation		556			499
Other		376			334
Total deferred tax assets		14,916			15,963
Deferred tax liabilities:
Intangible assets		(105	)		(126	)
Total deferred tax liabilities		(105	)		(126	)
Net deferred tax asset before valuation allowance		14,811			15,837
Valuation allowances for deferred tax assets		(14,950	)		(15,971	)
Net deferred tax liability	$	(139	)	$	(134	)

Summary of Valuation Allowance [Table Text Block]

Year	Balance at January 1		Charged to costs and expenses			(Deductions)/Other		Balance at December 31
2020	$	15,394		577			—	$	15,971
2021	$	15,971		(1,021	)		—	$	14,950