Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

	March 31, 2021
Goodwill balance at January 1	$	363,533
Effect of foreign exchange		(1,033)
Goodwill balance at March 31	$	362,500

Other intangible assets

Other intangible assets at March 31, 2021 and December 31, 2020 consisted of the following (in thousands):

	March 31, 2021
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	24,362	$	(6,929)	$	17,433
Distribution agreements		3,250		(2,369)		881
License agreements		14,418		(7,010)		7,408
Trademarks		30,255		(13,131)		17,124
Customer lists		35,052		(29,586)		5,466
Total	$	107,337	$	(59,025)	$	48,312

	December 31, 2020
	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
Patents	$	23,669	$	(6,460)	$	17,209
Distribution agreements		3,250		(2,319)		931
License agreements		14,453		(6,647)		7,806
Trademarks		30,273		(12,414)		17,859
Customer lists		35,154		(29,103)		6,051
Total	$	106,799	$	(56,943)	$	49,856

Estimated amortization expense

Estimated amortization expense for the developed technology and other intangible assets for the next five years consisted of the following as of March 31, 2021 (in thousands):

Year Ending December 31,	Estimated Amortization Expense
Remaining 2021	$	37,320
2022		48,634
2023		47,454
2024		44,404
2025		42,548