Note 13 - Income Tax (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

	Years Ended December 31
	2021		2020		2019
Cayman Islands	$	9,601	$	4,169	$	(6,355	)
Foreign		3,484		2,895		2,487
Total	$	13,085	$	7,064	$	(3,868	)

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

	Years Ended December 31
	2021			2020			2019
Current	$	978		$	942		$	1,304
Deferred		(6	)		(5	)		(133	)
Total	$	972		$	937		$	1,171

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

	Years Ended December 31
	2021			2020			2019
Tax expense at statutory rate	$	-		$	-		$	-
Increase (decrease) in tax resulting from:
Differences between Cayman and foreign tax rates		525			294			344
Withholding taxes on repatriation of subsidiary profits		383			286			351
Changes in valuation allowances for deferred income tax assets		196			3			91
Withholding taxes on interest income		83			83			83
Adjustments to prior years’ taxes		15			34			34
Alternative Minimum Tax on EMC stock sales		-			184			345
Changes in deferred income tax assets and liabilities		(202	)		(8	)		(224	)
Other		(28	)		61			147
Total	$	972		$	937		$	1,171

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

	December 31
	2021			2020
Deferred income tax assets
Research and development credits	$	7,062		$	6,908
Depreciation and amortization		137			102
Accrued vacation and other expenses		49			41
Net operating loss carryforwards		20			23
		7,268			7,074
Valuation allowance		(7,218	)		(7,022	)
Total net deferred income tax assets	$	50		$	52
Deferred income tax liabilities
Withholding taxes on repatriation of subsidiary profits	$	537		$	545