Segments and Geographical Information - Non-Cash Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Stock-based compensation	$ 44,997	$ 38,788
Depreciation and amortization	39,148	32,946
Operating Segments \| Clear Aligner
Segment Reporting Information [Line Items]
Stock-based compensation	5,818	3,764
Depreciation and amortization	18,904	14,433
Operating Segments \| Systems and Services
Segment Reporting Information [Line Items]
Stock-based compensation	403	359
Depreciation and amortization	8,469	6,838
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Stock-based compensation	38,776	34,665
Depreciation and amortization	$ 11,775	$ 11,675

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration