Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

	2019
Goodwill balance at January 1	$	335,433
Effect of foreign exchange		(1,069)
Additions and adjustments as the result of acquisitions		17,794
Goodwill balance at September 30	$	352,158

Other intangible assets

Other intangible assets at September 30, 2019 and December 31, 2018, consisted of the following (in thousands):

	September 30, 2019
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	21,938	$	(6,449)	$	15,489
Distribution agreements		8,012		(6,537)		1,475
License agreements		26,975		(12,226)		14,749
Trademarks		30,232		(8,743)		21,489
Covenants not to compete		1,029		(1,023)		6
Customer lists		39,803		(27,400)		12,403
In-process technology		2,500		—		2,500
Total	$	130,489	$	(62,378)	$	68,111

	December 31, 2018
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	19,378	$	(5,012)	$	14,366
Distribution agreements		8,012		(5,766)		2,246
License agreements		26,930		(7,411)		19,519
Trademarks		29,998		(6,586)		23,412
Covenants not to compete		1,028		(1,000)		28
Customer lists		39,936		(23,361)		16,575
In-process technology		3,420		—		3,420
Total	$	128,702	$	(49,136)	$	79,566

Estimated amortization expense

Estimated amortization expense for the developed technology and other intangible assets for the next five years consists of the following as of September 30, 2019 (in thousands):

Year Ending December 31,	Estimated Amortization Expense
Remaining 2019	$	15,435
2020		59,265
2021		51,916
2022		50,504
2023		49,297
2024		46,360