Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The table below sets forth our (loss) income before taxes for the years ended December 31:

Income (loss) before income taxes	2021		2020		2019
U.S.	$	122,127	$	45,526	$	73,352
Foreign		192,968		74,815		124,894
Total	$	315,095	$	120,341	$	198,246

The table below sets forth the components of our income tax provision (benefit) for the years ended December 31:

	2021			2020			2019
Current tax provision
Federal	$	15,691		$	631		$	259
Foreign		25,489			17,115			28,829
State		(17	)		56			92
		41,163			17,802			29,180
Deferred tax provision (benefit)
Federal		(1,116	)		6,411			886
Foreign		31,222			(6,210	)		11,994
State		-			65			30
		30,106			266			12,910
Liability for unrecognized tax benefits		7,538			3,044			2,041
Total income tax provision	$	78,807		$	21,112		$	44,131

Schedule of Effective Income Tax Rate Reconciliation

The table below sets forth a reconciliation between the effective tax rate and the statutory tax rates for the years ended December 31:

	2021						2020						2019
				Percent						Percent						Percent
				of pretax						of pretax						of pretax
	Amount			earnings*			Amount			earnings*			Amount			earnings*
Federal tax	$	66,170			21.0		$	25,272			21.0		$	41,632			21.0
State income taxes, net of federal tax    provision		(474	)		(0.2	)		(378	)		(0.3	)		1,389			0.7
Foreign income taxed at different tax rates		(2,018	)		(0.6	)		81			0.1			(5,786	)		(2.9	)
U.S. tax impact of foreign operations		(17,375	)		(5.5	)		(3,031	)		(2.5	)		(3,340	)		(1.7	)
Foreign withholding taxes		33,175			10.5			(1,798	)		(1.5	)		22,685			11.4
Research and development		(6,310	)		(2.0	)		(4,210	)		(3.5	)		(3,686	)		(1.9	)
Liability for unrecognized tax benefits		7,538			2.4			3,044			2.5			2,041			1.0
Valuation allowance		(1,068	)		(0.3	)		2,199			1.8			(10,563	)		(5.3	)
Employee stock-based compensation		(812	)		(0.3	)		(660	)		(0.5	)		(52	)		-
Other		(19	)		-			593			0.5			(189	)		(0.1	)
Income tax provision	$	78,807			25.0		$	21,112			17.5		$	44,131			22.3

* The sum of the amounts in the table may not equal to the effective tax rate due to rounding.

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible

In accordance with the provisions related to accounting for uncertainty in income taxes, we recognize the benefit of a tax position if the position is “more likely than not” to prevail upon examination by the relevant tax authority. The table below sets forth a reconciliation of the beginning and ending amount of unrecognized tax benefits:

	2021			2020			2019
Balance at January 1,	$	42,466		$	35,652		$	32,209
Additions based on tax positions related to the    current year		9,244			7,495			9,274
Additions for prior year tax positions		138			4,952			39
Reductions for prior year tax positions		(8,470	)		(5,633	)		(5,870	)
Balance at December 31,	$	43,378		$	42,466		$	35,652

Schedule of Deferred Tax Assets and Liabilities

The table below sets forth our deferred tax assets and liabilities as of December 31:

	2021			2020
Deferred tax assets
Inventory cost	$	21,692		$	15,154
Accrued expenses and accounts receivable		5,966			5,294
Research and development tax credits		9,613			15,807
Net operating loss carryforwards		42,068			42,734
Lease obligations		2,050			2,982
Plant, equipment and intangible assets		-			162
Accrued pension		3,878			6,386
Share based compensation and others		14,809			8,810
		100,076			97,329
Valuation allowances		(45,232	)		(45,591	)
Total deferred tax assets, non-current		54,844			51,738
Deferred tax liabilities
Plant, equipment and intangible assets		(1,330	)		-
Right of use assets		(1,975	)		(2,936	)
Outside basis differences and others		(50,773	)		(13,467	)
Total deferred tax liabilities, non-current		(54,078	)		(16,403	)
Net deferred tax assets	$	766		$	35,335