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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision (benefit) for income taxes for the years ended December 31, 2021, 2020 and 2019 consists of the following:

			2021						2020						2019
Current tax expense (benefit):
Federal			$	(97)					$	(729)					$	96
State			609						86						444
Foreign			7,046						6,963						8,375
			7,558						6,320						8,915
Deferred income tax expense (benefit):
Federal			3,466						(12,253)						(3,970)
State			1,449						(1,173)						(938)
Foreign			(1,910)						(808)						(1,402)
			3,005						(14,234)						(6,310)
Provision (benefit) for income taxes			$	10,563					$	(7,914)					$	2,605

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation between income taxes computed at the statutory federal rate and the provision (benefit) for income taxes for the years ended December 31, 2021, 2020 and 2019 follows:

			2021						2020						2019
Tax provision at statutory rate based on income before income taxes			21.0		%				21.0		%				21.0		%
Stock-based compensation			(9.4)						(267.7)						(15.4)
Federal research credit			(2.3)						(124.2)						(4.0)
Valuation allowance			(2.2)						49.7						1.9
US tax on worldwide earnings at different rates			(0.4)						(123.7)						7.9
Settlement of taxing authority examinations			—						(122.9)						(7.7)
Tax treaty protocols			—						—						(2.9)
Non deductible/non-taxable items			0.8						28.6						2.8
Foreign income taxes			3.1						79.9						4.5
State income taxes, net of federal tax benefit			3.7						(24.5)						0.3
Other, net			0.1						(10.1)						(0.1)
			14.4		%				(493.9)		%				8.3		%

Schedule of Deferred Tax Assets and Liabilities

The tax effects of the significant temporary differences which comprise the deferred income tax assets and liabilities at December 31, 2021 and 2020 are as follows:

			2021						2020
Assets:
Inventory			$	4,694					$	4,649
Net operating losses			18,383						22,197
Capitalized research and development			4,173						5,187
Deferred compensation			2,563						2,240
Accounts receivable			3,147						2,784
Compensation and benefits			6,583						7,540
Accrued pension			3,930						5,348
Research and development credit			15,542						13,540
Convertible notes hedge			4,869						6,999
Lease liabilities			3,573						4,452
Other			5,741						6,793
Less: valuation allowances			(786)						(2,721)
			72,412						79,008
Liabilities:
Goodwill and intangible assets			106,065						104,119
Depreciation			2,546						2,512
State taxes			11,833						9,614
Unremitted foreign earnings			2,449						2,423
Convertible notes debt discount			4,915						7,060
Lease right-of-use assets			3,484						4,313
			131,292						130,041
Net liability			$	(58,880)					$	(51,033)

Schedule of Income before Income Tax

Income before income taxes consists of the following U.S. and foreign income:

			2021						2020						2019
U.S. income			$	45,260					$	(16,026)					$	5,332
Foreign income			27,845						17,629						25,893
Total income			$	73,105					$	1,603					$	31,225

Schedule of Unrecognized Tax Benefits Rollforward

The following table summarizes the activity related to our unrecognized tax benefits for the years ending December 31,:

			2021						2020						2019
Balance as of January 1,			$	200					$	2,170					$	3,073
Increases for positions taken in current periods			—						—						1,650
Decreases in unrecorded tax positions related to settlement with the taxing authorities			—						(1,970)						(2,404)
Decreases in unrecorded tax positions related to lapse of statute of limitations			—						—						(149)
Balance as of December 31,			$	200					$	200					$	2,170

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