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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision (benefit) for income taxes for the years ended December 31, 2019, 2018 and 2017 consists of the following:

	2019				2018				2017
Current tax expense:
Federal	$	96			$	(1,077	)		$	1,744
State	444				777				2,101
Foreign	8,375				8,036				9,421
	8,915				7,736				13,266
Deferred income tax expense (benefit):
Federal	(3,970		)		4,478				(44,456		)
State	(938		)		62				(1,036		)
Foreign	(1,402		)		(2,477		)		5,471
	(6,310		)		2,063				(40,021		)
Provision (benefit) for income taxes	$	2,605			$	9,799			$	(26,755	)

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, 2019, 2018 and 2017 follows:

	2019			2018			2017
Tax provision at statutory rate based on income before income taxes	21.0	%		21.0	%		35.0	%
Stock-based compensation	(15.4	)		(1.6	)		(2.1	)
Settlement of taxing authority examinations	(7.7	)		(0.7	)		(2.1	)
Federal research credit	(4.0	)		(2.8	)		(2.8	)
Tax treaty protocols	(2.9	)		—			—
US tax on worldwide earnings at different rates	7.9			2.9			—
Foreign income taxes	6.4			3.6			(5.3	)
Non deductible/non-taxable items	2.8			(1.4	)		(1.0	)
State income taxes, net of federal tax benefit	0.3			1.6			2.8
International tax reform	—			(3.6	)		—
US tax reform	—			1.8			(111.0	)
Consolidated group restructuring	—			—			(7.4	)
Other, net	(0.1	)		(1.5	)		0.8
	8.3	%		19.3	%		(93.1	)%

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, 2019 and 2018 are as follows:

	2019				2018
Assets:
Inventory	$	4,085			$	4,096
Net operating losses	3,679				7,358
Capitalized research and development	6,201				7,214
Deferred compensation	2,102				2,085
Accounts receivable	2,556				2,296
Compensation and benefits	6,049				5,434
Accrued pension	3,710				3,205
Research and development credit	10,321				8,585
Interest limitation	5,702				—
Convertible notes hedge	9,004				—
Lease liabilities	5,688				—
Other	4,336				2,235
Less: valuation allowances	(1,732		)		(1,159		)
	61,701				41,349
Liabilities:
Goodwill and intangible assets	102,015				100,108
Depreciation	301				1,345
State taxes	11,161				12,212
Unremitted foreign earnings	2,619				3,583
Convertible notes debt discount	9,096				—
Lease right-of-use assets	5,338				—
	130,530				117,248
Net liability	$	(68,829	)		$	(75,899	)

Schedule of Income before Income Tax

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

	2019				2018				2017
U.S. income	$	5,332			$	24,320			$	1,492
Foreign income	25,893				26,333				27,240
Total income	$	31,225			$	50,653			$	28,732

Schedule of Unrecognized Tax Benefits Rollforward

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

	2019				2018				2017
Balance as of January 1,	$	3,073			$	2,943			$	1,839
Increases (decreases) for positions taken in prior periods	—				(250		)		(246		)
Increases for positions taken in current periods	1,650				1,017				1,957
Decreases in unrecorded tax positions related to settlement with the taxing authorities	(2,404		)		(370		)		(607		)
Decreases in unrecorded tax positions related to lapse of statute of limitations	(149		)		(267		)		—
Balance as of December 31,	$	2,170			$	3,073			$	2,943

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