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Goodwill and Intangible Assets - Change in Carrying Value of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Balance as of December 31, 2023	$ 419,530
Additions from acquisition	47,673
Foreign currency translation adjustments	(12,710)
Balance as of June 30, 2024	454,493
Clear Aligner
Goodwill [Roll Forward]
Balance as of December 31, 2023	111,086
Additions from acquisition	47,673
Foreign currency translation adjustments	(3,091)
Balance as of June 30, 2024	155,668
Systems and Services
Goodwill [Roll Forward]
Balance as of December 31, 2023	308,444
Additions from acquisition	0
Foreign currency translation adjustments	(9,619)
Balance as of June 30, 2024	$ 298,825

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- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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