Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill and accumulated impairment (loss) during the three months ended March 31, 2018 and year ended December 31, 2017 were as follows:


	Three Months Ended March 31, 2018							Twelve Months Ended December 31, 2017
	Gross Carrying Amount		Accumulated Impairment (Loss)			Net		Gross Carrying Amount			Accumulated Impairment (Loss)			Net
Beginning balance at January 1	$	735,323	$	(144,276	)	$	591,047	$	727,999		$	(139,414	)	$	588,585
Sale of business⁽¹⁾		—		—			—		(3,115	)		—			(3,115	)
Impairment loss⁽²⁾		—		—			—		—			(4,862	)		(4,862	)
Foreign currency translation		2,447		—			2,447		10,439			—			10,439

Ending balance at March 31, 2018 and December 31, 2017	$	737,770	$	(144,276	)	$	593,494	$	735,323		$	(144,276	)	$	591,047

⁽¹⁾

In 2017, the Company sold its Data Analytics business and, as a result, charged the related goodwill of $(3,115) to the gain on sale of business.

⁽²⁾

In 2017, the Company recorded an impairment loss of $(4,862) related to the write-off of goodwill related to the discontinuation of a product line and consolidation of two manufacturing plants.

Intangible Assets

Components of the Company’s intangible assets are comprised of the following:


As of March 31, 2018:	Gross		Impairment Charges			Accumulated Amortization			Foreign Currency Translation		Net
Completed technology	$	172,431	$	(105	)	$	(120,898	)	$	425	$	51,853
Customer relationships		282,744		(1,406	)		(50,138	)		2,682		233,882
Patents, trademarks, trade names and other		110,523		—			(39,958	)		45		70,610

	$	565,698	$	(1,511	)	$	(210,994	)	$	3,152	$	356,345


As of December 31, 2017:	Gross		Impairment Charges⁽²⁾			Accumulated Amortization			Foreign Currency Translation			Net
Completed technology⁽¹⁾	$	172,431	$	(105	)	$	(115,371	)	$	333		$	57,288
Customer relationships⁽¹⁾		282,744		(1,406	)		(45,518	)		1,571			237,391
Patents, trademarks, trade names and other⁽¹⁾		110,523		—			(38,730	)		(74	)		71,719

	$	565,698	$	(1,511	)	$	(199,619	)	$	1,830		$	366,398

⁽¹⁾

In 2017, the Company sold its Data Analytics business and, as a result, wrote off the related intangibles of $4,155 of completed technology, $2,300 of customer relationships and $1,200 of patents, trademarks, trade names and other, which were fully amortized at the time of sale.

⁽²⁾

In 2017, the Company recorded impairment charges of $1,511 related to the write-off of intangible assets as a result of the discontinuation of a product line and consolidation of two manufacturing plants.

Estimated Net Amortization Expense

Aggregate net amortization expense related to acquired intangible assets and unfavorable lease commitments for future years is as follows:


Year	Amount
2018 (remaining)	$	32,596
2019		40,511
2020		28,393
2021		20,485
2022		17,811
2023		17,427
Thereafter		140,413