Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	Year ended December 31,
	2019			2018			2017
Domestic	$	1,129		$	(13,814	)	$	(42,185	)
Foreign		(18,099	)		(15,409	)		(4,810	)
Loss before provision for income taxes	$	(16,970	)	$	(29,223	)	$	(46,995	)

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

	Year ended December 31,
	2019			2018			2017
Current:
Federal	$	(2,726	)	$	(773	)	$	(250	)
State		286			227			47
Foreign		(1,084	)		(6,830	)		5,365
Total current income tax (benefit) expense		(3,524	)		(7,376	)		5,162
Deferred:
Federal		343			379			(5,497	)
State		49			48			(372	)
Foreign		(2,317	)		(1,428	)		(1,182	)
Total deferred income (benefit) expense		(1,925	)		(1,001	)		(7,051	)
Income tax (benefit) expense	$	(5,449	)	$	(8,377	)	$	(1,889	)

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

	Year ended December 31,
	2019			2018			2017
Federal statutory rate		(21.0	)%		(21.0	)%		(35.0	)%
Foreign rate differential		(2.9	)%		(3.0	)%		1.5	%
Losses of foreign subsidiaries disregarded for US income tax		—	%		(1.3	)%		(2.5	)%
State income taxes, net of federal benefit		2.9	%		(0.8	)%		(3.0	)%
Nondeductible loan costs		—	%		0.5	%		1.4	%
Nondeductible transaction costs		0.7	%		1.1	%		—	%
Impact of tax liquidation		—	%		10.4	%		—	%
Tax indemnification charges		7.9	%		9.5	%		(1.3	)%
Stock Compensation		1.0	%		(1.4	)%		—	%
Other differences		4.1	%		2.7	%		(2.7	)%
Withholding tax		3.3	%		1.7	%		2.5	%
Tax credits		(2.4	)%		(12.0	)%		(2.1	)%
Uncertain tax positions		(26.0	)%		(38.0	)%		7.3	%
Valuation allowance		0.3	%		22.9	%		47.2	%
Rate change - impact of the Tax Act		—	%		—	%		19.9	%
Repatriation tax - impact of the Tax Act		—	%		(1.0	)%		4.1	%
Tax credits - impact of the Tax Act		—	%		0.6	%		(6.0	)%
Valuation allowance - impact of the Tax Act		—	%		0.4	%		(35.3	)%
Effective tax rate		(32.1	)%		(28.7	)%		(4.0	)%

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

	December 31,
	2019			2018
Deferred tax assets:
Accrued expenses	$	2,411		$	3,042
Stock Compensation		3,129			2,164
Foreign tax credits		12,189			13,571
Net operating loss carryforwards		46,872			43,637
Research and development credits		6,313			4,530
Other		6,391			4,492
Total deferred tax assets		77,305			71,436
Valuation allowance		(41,004	)		(40,857	)
Deferred tax assets, net of valuation allowance	$	36,301		$	30,579
Deferred tax liabilities:
Prepaid expenses and other	$	(582	)	$	(511	)
Intangible assets		(19,719	)		(19,552	)
Property and equipment, net		(12,871	)		(9,415	)
Deferred tax liabilities		(33,172	)		(29,478	)
Net deferred tax assets (liabilities)	$	3,129		$	1,101

Summary of Income Tax Contingencies [Table Text Block]

	December 31, 2019			December 31, 2018
Balance-beginning of year	$	12,580		$	28,673
Acquisitions		1,244			—
Increases based on tax positions of the current year		453			393
Decrease due to tax authority settlements		—			(10,457	)
Decreases due to lapse of statute		(3,225	)		(5,118	)
Increases based on tax positions of the prior years		95			156
Decreases based on tax positions of the prior years		(670	)		(1,065	)
Currency translation adjustments		477			(2	)
Balance-end of year	$	10,954		$	12,580