| Summary of Goodwill by Reportable Segment |
The change in the carrying value of goodwill for the three months ended March 31, 2025, categorized by reportable segment, is as follows (in thousands): | | | | | | | | | | | | | | | | | | | Clear Aligner | | Systems and Services | | Total | Balance as of December 31, 2024 | $ | 152,645 | | | $ | 289,985 | | | $ | 442,630 | | | | | | | | Foreign currency translation adjustments | 3,534 | | | 11,447 | | | 14,981 | | Balance as of March 31, 2025 | $ | 156,179 | | | $ | 301,432 | | | $ | 457,611 | |
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| Schedule of Amortized Intangible Assets |
Acquired finite-lived intangible assets, excluding intangibles that were fully amortized, are as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Weighted Average Amortization Period
(in years) | | Gross Carrying Amount as of March 31, 2025 | | Accumulated
Amortization | | Accumulated
Impairment Loss | | Net Carrying Value as of March 31, 2025 | | Existing technology | 11 | | $ | 146,651 | | | $ | (56,004) | | | $ | — | | | $ | 90,647 | | | Customer relationships | 10 | | 21,500 | | | (10,750) | | | — | | | 10,750 | | Trademarks and tradenames1 | 7 | | 9,800 | | | (7,000) | | | — | | | 2,800 | | | Patents | 12 | | 480 | | | (290) | | | — | | | 190 | | | | | $ | 178,431 | | | $ | (74,044) | | | $ | — | | | 104,387 | | | Foreign currency translation adjustments | | | | | | | | | (1,637) | | | Total intangible assets, net | | | | | | | | | $ | 102,750 | |
1 The Weighted Average Amortization Period decreased from 10 years to 7 years due an intangible asset with a useful life of 15 years becoming fully amortized during the current quarter.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Weighted Average Amortization Period
(in years) | | Gross Carrying Amount as of December 31, 2024 | | Accumulated Amortization | | Accumulated Impairment Loss | | Net Carrying Value as of December 31, 2024 | | Existing technology | 11 | | $ | 146,651 | | | $ | (52,238) | | | $ | — | | | $ | 94,413 | | | Customer relationships | 10 | | 21,500 | | | (10,079) | | | — | | | 11,421 | | | Trademarks and tradenames | 10 | | 16,600 | | | (9,255) | | | (4,122) | | | 3,223 | | | Patents | 12 | | 480 | | | (280) | | | — | | | 200 | | | | | $ | 185,231 | | | $ | (71,852) | | | $ | (4,122) | | | 109,257 | | | Foreign currency translation adjustments | | | | | | | | | (5,769) | | | Total intangible assets, net | | | | | | | | | $ | 103,488 | |
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense |
The total estimated future amortization expense for these acquired finite-lived intangible assets as of March 31, 2025, is as follows (in thousands): | | | | | | | | | | Fiscal Year Ending December 31, | | Amortization | Remainder of 2025 | | $ | 13,827 | | | 2026 | | 17,923 | | | 2027 | | 15,607 | | | 2028 | | 14,505 | | | 2029 | | 14,505 | | | 2030 | | 6,328 | | | Thereafter | | 21,692 | | | Total | | $ | 104,387 | |
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