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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Pre-Tax Income (Loss) by Jurisdiction

In 2020, 2019 and 2018, pre-tax income (loss) was attributed to the following jurisdictions: 

			Year Ended December 31,
(In thousands)			2020						2019						2018
Domestic operations			$	(15,711)					$	(28,929)					$	(28,482)
Foreign operations			59,616						39,331						54,648
Total			$	43,905					$	10,402					$	26,166

Provision for Income Taxes

The provision for income taxes charged to operations was as follows: 

			Year Ended December 31,
(In thousands)			2020						2019						2018
Current tax expense:
U.S. federal			$	(193)					$	(188)					$	(1,074)
State and local			(54)						82						83
Foreign			6,525						8,217						10,829
Total current			6,278						8,111						9,838
Deferred tax (benefit) expense:
U.S. federal			—						—						3,961
State and local			—						—						1,930
Foreign			(945)						(1,339)						(1,487)
Total deferred			(945)						(1,339)						4,404
Total provision for income taxes			$	5,333					$	6,772					$	14,242

Net Deferred Tax Assets

Net deferred tax assets were comprised of the following: 

			December 31,
(In thousands)			2020						2019
Deferred tax assets:
Accrued liabilities			$	—					$	4,070
Amortization of intangible assets			1,904						2,169
Capitalized inventory costs			2,945						3,156
Depreciation			2,530						426
Income tax credits			15,558						11,800
Inventory reserves			3,383						2,887
Net operating losses			2,844						2,644
Operating lease obligations			4,639						7,878
Stock-based compensation			4,600						4,018
Other			409						71
Total deferred tax assets			38,812						39,119
Deferred tax liabilities:
Accrued liabilities			(1,939)						—
Allowance for credit losses			(710)						(270)
Right of use assets			(4,577)						(7,480)
Other			(29)						(3,866)
Total deferred tax liabilities			(7,255)						(11,616)
Net deferred tax assets before valuation allowance			31,557						27,503
Less: Valuation allowance			(27,906)						(24,797)
Net deferred tax assets			$	3,651					$	2,706

Reconciliation of Tax Provision at Statutory U.S. Rate to Provision for Income Taxes

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pre-tax income from operations as a result of the following: 

			Year Ended December 31,
(In thousands)			2020						2019						2018
Tax provision at statutory U.S. rate			$	9,220					$	2,185					$	5,495
Increase (decrease) in tax provision resulting from:
Federal research and development credits			(2,119)						(884)						(713)
Foreign permanent benefit			(2,842)						(856)						(7,077)
Foreign tax rate differential			(1,595)						(1,810)						(2,079)
Foreign undistributed earnings, net of credits			3,319						1,181						5,329
Non-deductible items			1,637						1,236						1,197
Non-territorial income			(2,493)						(1,806)						(1,079)
Provision to return			(343)						584						—
State and local taxes, net			(1,932)						(1,903)						(1,792)
Stock-based compensation			(266)						262						213
Tax rate change			(1,527)						(412)						466
Uncertain tax positions			(1,565)						(294)						(159)
Valuation allowance			3,109						7,524						8,057
Withholding tax			2,320						1,082						5,454
Other			410						683						930
Tax provision			$	5,333					$	6,772					$	14,242

Changes to Gross Unrecognized Tax Benefits

Changes to our gross unrecognized tax benefits were as follows: 

			Year Ended December 31,
(In thousands)			2020						2019						2018
Balance at beginning of period			$	4,094					$	4,040					$	5,081
Additions as a result of tax provisions taken during the current year			274						473						702
Foreign currency translation			20						(100)						(51)
Lapse in statute of limitations			(51)						(92)						(80)
Settlements			—						(227)						(1,612)
Other			(1,317)						—						—
Balance at end of period			$	3,020					$	4,094					$	4,040

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