Note 11 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

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

	Year Ended December 31,
	2025		2024		2023
U.S.	$	2,691	$	4,765	$	3,220
Foreign		510		1,814		1,649
Income before income tax expense	$	3,201	$	6,579	$	4,869

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

	Year Ended December 31,
	2025			2024		2023
Current tax expense:
Federal	$	398		$	213	$	1,854
State		333			286		(437	)
Foreign		2,228			1,976		452
Total current tax expense		2,959			2,475		1,869
Deferred tax expense:
Federal		926			6		6
State		35			3		(3	)
Foreign		(79	)		38		(108	)
Total deferred tax expense		882			47		(105	)
Total income tax expense	$	3,841		$	2,522	$	1,764

Schedule of Income Taxes Paid By Jurisdiction [Table Text Block]

	Year Ended December 31, 2025
US Federal	$	—
State and Local:
US State		111
Total State and Local		111
Foreign:
China		1,311
Taiwan		665
Japan		252
Other		144
Total Foreign		2,372
Total income taxes paid, net of refunds	$	2,483

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

	Year Ended December 31, 2025
Federal statutory income tax expense	$	676		21	%
State and local income taxes, net of federal income tax effect		7		—		*
Change in valuation allowance		965		30
Nontaxable or nondeductible items:
Stock compensation expense		2,093		65
Meals expense		100		3
Section 162(m) limitation		64		2
U.S. branch income		70		2
Sales-type lease interest income		(83	)	(3	)
Other nontaxable or nondeductible items		14		—		*
Tax credits:
Foreign tax credits		(1,995	)	(62	)
Other tax credits		(10	)	—		*
Cross-border tax laws:
Foreign-derived intangible income deduction		(403	)	(13	)
Worldwide changes in unrecognized tax benefits		575		18
Foreign tax effects:
Taiwan
Foreign permanent differences		61		2
Prior year true up		(35	)	(1	)
Foreign withholding tax		567		18
Other adjustment		(4	)	—		*
China
Foreign permanent differences		(133	)	(4	)
Foreign withholding tax		1,306		41
Other adjustment		23		1
Canada
Foreign permanent differences		247		8
Tax rate differential		(64	)	(2	)
Other adjustment		(1	)	—		*
Malaysia
Foreign withholding tax		55		2
Other foreign jurisdictions		20		1
Other:
Deferred tax asset adjustment		(88	)	(3	)
Transaction costs		(198	)	(6	)
Other adjustment		12		—		*
Global effective income tax expense	$	3,841		120	%

	Year Ended December 31,
	2024			2023
Federal statutory income tax expense	$	1,382		$	1,016
State income tax expense		738			(65	)
Stock compensation expense		286			(1,747	)
Tax credits		(2,795	)		(3,214	)
Foreign taxes, net		1,707			1,859
Foreign-derived intangible income deduction		(2,052	)		(1,612	)
Change in valuation allowance		2,882			5,043
Section 162(m) limitation		148			424
Unrealized tax benefit reserve changes		232			99
Other		(6	)		(39	)
Global effective income tax expense	$	2,522		$	1,764

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

	December 31,
	2025			2024
Deferred tax assets:
Net operating loss carry-forwards	$	1,880		$	2,414
Research and development and other credit carry-forwards		32,657			31,988
Foreign tax credit carry-forwards		2,256			1,977
Capitalized research and experimental expenses		24,932			26,426
Accruals deductible in different periods		8,717			6,049
Leases		952			1,113
Stock-based compensation		2,066			2,087
Total deferred tax assets		73,460			72,054
Less: valuation allowance		(69,874	)		(67,946	)
Total deferred tax assets, net of valuation allowance		3,586			4,108
Deferred tax liabilities:
Property and equipment, net		(1,233	)		(752	)
Operating lease right-of-use assets		(922	)		(1,082	)
Intangible assets		(2,418	)		(2,366	)
Total deferred tax liabilities		(4,573	)		(4,200	)
Net deferred tax liabilities	$	(987	)	$	(92	)

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

	Year Ended December 31,
	2025			2024			2023
Gross unrecognized tax benefits, beginning of year	$	16,569		$	15,937		$	15,109
Increases in tax positions for current year		1,171			1,290			1,469
Increases in tax positions for prior years		—			—			91
Lapse in statute of limitations		(615	)		(658	)		(732	)
Gross unrecognized tax benefits, end of year	$	17,125		$	16,569		$	15,937

Summary of Valuation Allowance [Table Text Block]

	Balance at Beginning of Year		Charged to Income Tax Expense		Deductions/ Write-offs of Accounts		Balance at End of Year
2025	$	67,946	$	1,928	$	—	$	69,874
2024	$	64,152	$	3,794	$	—	$	67,946
2023	$	59,215	$	4,937	$	—	$	64,152