Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision (benefit) for income taxes for the years ended December 31, 2017, 2016 and 2015 consists of the following:

	2017			2016			2015
Current tax expense:
Federal	$	1,744		$	312		$	4,208
State	2,101			159			1,238
Foreign	9,421			7,111			6,949
	13,266			7,582			12,395
Deferred income tax expense (benefit)	(40,021		)	(2,871		)	2,251
Provision (benefit) for income taxes	$	(26,755	)	$	4,711		$	14,646

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, 2017, 2016 and 2015 follows:

	2017		2016		2015
Tax provision at statutory rate based on income before income taxes	35.0	%	35.0	%	35.0	%
Tax reform	(111.0	)	—		—
Consolidated group restructuring	(7.4	)	—		—
Foreign income taxes	(5.3	)	(6.8	)	(3.6	)
Federal research credit	(2.8	)	(5.6	)	(2.0	)
Settlement of taxing authority examinations	(2.1	)	(3.5	)	(0.6	)
Stock-based compensation	(2.1	)	—		—
European permanent deduction	(0.5	)	(3.4	)	(2.1	)
Non deductible/non-taxable items	(0.5	)	7.2		1.8
State income taxes, net of federal tax benefit	2.8		1.7		3.2
Impact of repatriation of foreign earnings	—		—		2.5
Other, net	0.8		(0.3	)	(1.8	)
	(93.1	)%	24.3	%	32.4	%

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, 2017 and 2016 are as follows:

	2017			2016
Assets:
Inventory	$	2,420		$	3,769
Net operating losses	11,091			34,669
Capitalized research and development	8,557			6,257
Deferred compensation	1,749			2,544
Accounts receivable	1,855			3,186
Compensation and benefits	4,138			6,645
Accrued pension	2,695			4,530
Research and development credit	8,957			8,164
Other	9,342			2,001
Foreign tax credit	—			1,112
Less: valuation allowances	(570		)	(441		)
	50,234			72,436
Liabilities:
Goodwill and intangible assets	102,099			168,509
Depreciation	3,333			9,099
State taxes	11,709			10,123
Unremitted foreign earnings	6,000			—
Contingent interest	40			136
	123,181			187,867
Net liability	$	(72,947	)	$	(115,431	)

Schedule of Income before Income Tax

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

	2017		2016			2015
U.S. income (loss)	$	1,492	$	(6,128	)	$	18,119
Foreign income	27,240		25,503			27,025
Total income	$	28,732	$	19,375		$	45,144

Schedule of Unrecognized Tax Benefits Rollforward

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

	2017			2016			2015
Balance as of January 1,	$	1,839		$	616		$	581
Increases (decreases) for positions taken in prior periods	(246		)	—			100
Increases for positions taken in current periods	1,957			1,584			—
Decreases in unrecorded tax positions related to settlement with the taxing authorities	(607		)	(361		)	—
Decreases in unrecorded tax positions related to lapse of statute of limitations	—			—			(65		)
Balance as of December 31,	$	2,943		$	1,839		$	616