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Segments and Geographical Information - Segments Information - (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Net revenues | $ 3,952,584 | $ 2,471,941 | $ 2,406,796
Gross profit | 2,935,355 | 1,763,235 | 1,743,897
Operating Income (Loss) | 976,400 | 387,171 | 542,493
Stock-based compensation | 114,336 | 98,427 | 88,184
Depreciation and amortization | 108,729 | 93,538 | 78,990
Impairments and other charges (gains), net | 0 | 0 | 22,990
Litigation settlement gain | 0 | 0 | (51,000)
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Income (Loss) | 1,584,993 | 864,097 | 973,677
Unallocated corporate expense |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Income (Loss) | (608,593) | (476,926) | (431,184)
Stock-based compensation | 102,983 | 88,718 | 78,709
Depreciation and amortization | 36,425 | 35,369 | 32,570
Clear Aligner |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenues | 3,247,080 | 2,101,459 | 2,025,750
Gross profit | 2,474,373 | 1,532,130 | 1,499,713
Impairments and other charges (gains), net | 0 | 0 | 22,990
Litigation settlement gain | 0 | 0 | (51,000)
Clear Aligner | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Income (Loss) | 1,325,866 | 768,045 | 835,957
Stock-based compensation | 10,648 | 8,975 | 9,220
Depreciation and amortization | 50,723 | 41,371 | 38,979
Systems and Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenues | 705,504 | 370,482 | 381,046
Gross profit | 460,982 | 231,105 | 244,184
Systems and Services | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Income (Loss) | 259,127 | 96,052 | 137,720
Stock-based compensation | 705 | 734 | 255
Depreciation and amortization | $ 21,581 | $ 16,798 | $ 7,441

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