Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2019 and 2018, are as follows (in thousands):

	2019		2018
Goodwill balance at January 1	$	335,433	$	238,147
Effect of foreign exchange		(199)		(1,304)
Additions and adjustments as the result of acquisitions		17,959		98,590
Goodwill balance at December 31	$	353,193	$	335,433

Other intangible assets

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

	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

	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 December 31, 2019 (in thousands):

Year Ending December 31,	Estimated Amortization Expense
2020	$	59,386
2021		52,032
2022		50,682
2023		49,485
2024		46,506