Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

	2020
Goodwill balance at January 1	$	353,193
Effect of foreign exchange		314
Additions and adjustments as the result of acquisitions		115
Goodwill balance at September 30	$	353,622

Other intangible assets

Other intangible assets at September 30, 2020 and December 31, 2019 consisted of the following (in thousands):

	September 30, 2020
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	25,202	$	(8,320)	$	16,882
Distribution agreements		3,250		(2,269)		981
License agreements		14,425		(6,244)		8,181
Trademarks		30,257		(11,675)		18,582
Customer lists		34,743		(28,405)		6,338
Total	$	107,877	$	(56,913)	$	50,964

	December 31, 2019
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	22,703	$	(6,863)	$	15,840
Distribution agreements		8,012		(6,794)		1,218
License agreements		26,987		(12,746)		14,241
Trademarks		30,240		(9,477)		20,763
Covenants not to compete		964		(964)		—
Customer lists		39,984		(28,763)		11,221
In-process technology		2,500		—		2,500
Total	$	131,390	$	(65,607)	$	65,783

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, 2020 (in thousands):

Year Ending December 31,	Estimated Amortization Expense
Remaining 2020	$	14,317
2021		49,611
2022		48,463
2023		47,306
2024		44,514