Segments and Geographical Information - Non-Cash Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting [Line Items]
Stock-based compensation	$ 45,560	$ 48,208	$ 86,484	$ 93,205
Depreciation and amortization	40,131	40,576	96,679	79,724
Change in estimated useful life \| Specifically identified manufacturing assets
Segment Reporting [Line Items]
Depreciation			15,600
Operating Segments \| Clear Aligner
Segment Reporting [Line Items]
Stock-based compensation	6,387	6,065	12,336	11,883
Depreciation and amortization	21,782	19,495	59,420	38,399
Operating Segments \| Systems and Services
Segment Reporting [Line Items]
Stock-based compensation	406	403	783	806
Depreciation and amortization	10,572	9,302	21,106	17,771
Unallocated corporate expenses
Segment Reporting [Line Items]
Stock-based compensation	38,767	41,740	73,365	80,516
Depreciation and amortization	$ 7,777	$ 11,779	$ 16,153	$ 23,554

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of noncash expense for share-based payment arrangement.

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