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Intangible Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2023
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of Intangible Assets by Major Class | The gross carrying amount and accumulated amortization (accretion) of our intangible assets and liabilities, other than goodwill, were as follows:
| September 30, 2023 |  | December 31, 2022
In thousands | Gross |  | Accumulated (Amortization) Accretion |  | Net |  | Gross |  | Accumulated (Amortization) Accretion |  | Net
Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Core-developed technology | $ | 497,988 |  |  | $ | (494,989) |  |  | $ | 2,999 |  |  | $ | 498,601 |  |  | $ | (492,782) |  |  | $ | 5,819 |
Customer contracts and relationships | 320,995 |  |  | (275,508) |  |  | 45,487 |  |  | 322,360 |  |  | (265,503) |  |  | 56,857 |
Trademarks and trade names | 71,903 |  |  | (70,099) |  |  | 1,804 |  |  | 72,156 |  |  | (70,101) |  |  | 2,055 |
Other | 12,017 |  |  | (11,899) |  |  | 118 |  |  | 12,017 |  |  | (11,807) |  |  | 210 |
Total intangible assets | $ | 902,903 |  |  | $ | (852,495) |  |  | $ | 50,408 |  |  | $ | 905,134 |  |  | $ | (840,193) |  |  | $ | 64,941 |
Intangible Liabilities |  |  |  |  |  |  |  |  |  |  |
Customer contracts and relationships | $ | (23,900) |  |  | $ | 23,900 |  |  | $ | — |  |  | $ | (23,900) |  |  | $ | 23,900 |  |  | $ | — |
Summary of Intangible Asset Account Activity | A summary of intangible assets and liabilities activity is as follows:
| Nine Months Ended September 30,
In thousands | 2023 |  | 2022
Intangible assets, gross beginning balance | $ | 905,134 |  |  | $ | 928,422 |
Effect of change in exchange rates | (2,231) |  |  | (47,113) |
Intangible assets, gross ending balance | $ | 902,903 |  |  | $ | 881,309 |
Intangible liabilities, gross beginning balance | $ | (23,900) |  |  | $ | (23,900) |
Effect of change in exchange rates | — |  |  | — |
Intangible liabilities, gross ending balance | $ | (23,900) |  |  | $ | (23,900) |
Schedule of Intangible Assets, Future Amortization Expense | Estimated future annual amortization is as follows:
Year Ending December 31, |  | Estimated Annual Amortization |  |  |  |
In thousands |  |
2023 (amount remaining at September 30, 2023) |  | $ | 4,496 |  |  |  |  |
2024 |  | 14,986 |  |  |  |  |
2025 |  | 14,267 |  |  |  |  |
2026 |  | 10,287 |  |  |  |  |
2027 |  | 5,628 |  |  |  |  |
Thereafter |  | 744 |  |  |  |  |
Total intangible assets subject to amortization |  | $ | 50,408 |  |  |  |  |

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