Note 5 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

	Year Ended December 31,
	2018			2017			2016
Current –
Federal	$	2,117		$	2,507		$	3,016
State		119			101			114
Foreign		1,122			898			-
		3,358			3,506			3,130
Deferred –
Federal		(168	)		(1,326	)		279
State		(121	)		(124	)		(111	)
Foreign					-			-
		(289	)		(1,450	)		168
Income Tax Provision	$	3,069		$	2,056		$	3,298

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

	Year Ended December 31,
	2018			2017			2016
Federal statutory rate		21.0	%		34.0	%		34.0	%
State income taxes, net of federal benefit		0.0	%		-0.2	%		0.1	%
Permanent differences		0.2	%		0.4	%		0.1	%
Stock based compensation		0.1	%		-0.7	%		0.0	%
Federal R&D Credits		-1.7	%		-1.3	%		-1.1	%
Foreign Taxes, net of federal benefit		20.5	%		7.1	%		0.0	%
Federal Deferred Rate Decrease		0.0	%		-14.2	%		0.0	%
Effective tax rate		40.1	%		25.1	%		33.1	%

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

	As of December 31,
	2018			2017
Deferred Tax Assets
Allowance for doubtful accounts	$	15		$	14
Accrued expenses		112			105
Stock-based compensation		114			79
R&D tax credits		675			578
Total Deferred Tax Assets	$	916		$	776
Deferred Tax Liabilities
Excess of tax over book depreciation and amortization	$	(1,832	)	$	(1,980	)
Prepaid expenses		(39	)		(39	)
Total Deferred Tax Liabilities		(1,871	)		(2,019	)
Net Deferred Tax Liabilities	$	(955	)	$	(1,243	)