Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

The change in the carrying value of goodwill for the year ended December 31, 2021 and 2020, categorized by reportable segments, is as follows (in thousands):


	Clear Aligner		Systems and Services		Total
Balance as of December 31, 2019	$	63,924	$	—	$	63,924
Additions from acquisition	43,500		296,681		340,181
Foreign currency translation adjustments	5,267		35,445		40,712
Balance as of December 31, 2020	112,691		332,126		444,817
Additions from acquisition	3,646		—		3,646
Foreign currency translation adjustments	(4,129)		(25,787)		(29,916)
Balance as of December 31, 2021	$	112,208	$	306,339	$	418,547

Schedule of Amortized Intangible Assets

Acquired intangible long-lived assets were as follows, excluding intangibles that were fully amortized (in thousands):


	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of December 31, 2021		Accumulated Amortization		Accumulated Impairment Loss		Net Carrying Value as of December 31, 2021
Existing technology	10	$	104,531	$	(22,495)	$	(4,328)	$	77,708
Customer relationships	11	55,000		(25,891)		(10,751)		18,358
Trademarks and tradenames	10	17,200		(4,547)		(4,179)		8,474
Patents and other	8	6,511		(4,495)		—		2,016
		$	183,242	$	(57,428)	$	(19,258)	106,556
Foreign currency translation								3,153
Total intangible assets								$	109,709


	Weighted Average Amortization Period (in years)	Gross Carrying Amount as of December 31, 2020		Accumulated Amortization		Accumulated Impairment Loss		Net Carrying Value as of December 31, 2020
Existing technology	10	$	99,400	$	(12,719)	$	(4,328)	$	82,353
Customer relationships	11	55,000		(21,879)		(10,751)		22,370
Trademarks and tradenames	10	16,600		(2,934)		(4,179)		9,487
Patents and other	8	6,610		(3,785)		—		2,825
		$	177,610	$	(41,317)	$	(19,258)	117,035
Foreign currency translation								13,037
Total intangible assets								$	130,072

Schedule of Future Amortization for Finite-Lived Intangible Assets

The total estimated annual future amortization expense for these acquired intangible assets as of December 31, 2021 is as follows (in thousands):


Fiscal Year	Amortization
2022	$	15,692
2023	14,997
2024	13,831
2025	13,455
2026	12,849
Thereafter	35,732
Total	$	106,556