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Schedule of Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of Finite-Lived Intangible Assets | The gross carrying amount and accumulated amortization (accretion) of our intangible assets and liabilities, other than goodwill, were as follows:
| December 31, 2023 |  | December 31, 2022
In thousands | Gross |  | Accumulated (Amortization) Accretion |  | Net |  | Gross |  | Accumulated (Amortization) Accretion |  | Net
Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Core-developed technology | $ | 502,010 |  |  | $ | (499,571) |  |  | $ | 2,439 |  |  | $ | 498,601 |  |  | $ | (492,782) |  |  | $ | 5,819 |
Customer contracts and relationships | 329,688 |  |  | (287,653) |  |  | 42,035 |  |  | 322,360 |  |  | (265,503) |  |  | 56,857 |
Trademarks and trade names | 73,461 |  |  | (71,740) |  |  | 1,721 |  |  | 72,156 |  |  | (70,101) |  |  | 2,055 |
Other | 12,019 |  |  | (11,932) |  |  | 87 |  |  | 12,017 |  |  | (11,807) |  |  | 210 |
Total intangible assets | $ | 917,178 |  |  | $ | (870,896) |  |  | $ | 46,282 |  |  | $ | 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:
| Year Ended December 31,
In thousands | 2023 |  | 2022
Intangible assets, gross beginning balance | $ | 905,134 |  |  | $ | 928,422 |
Effect of change in exchange rates | 12,044 |  |  | (23,288) |
Intangible assets, gross ending balance | $ | 917,178 |  |  | $ | 905,134 |
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 Finite-Lived Intangible Assets, Future Amortization Expense | Estimated future annual amortization is as follows:
Year Ending December 31, | Estimated Annual Amortization
In thousands |
2024 | $ | 15,164 |
2025 | 14,403 |
2026 | 10,369 |
2027 | 5,636 |
2028 | 181 |
Thereafter | 529 |
Total intangible assets subject to amortization | $ | 46,282 |
Finite-lived Intangible Assets Amortization Expense |
Amortization Expense | Year Ended December 31,
In thousands | 2023 |  | 2022 |  | 2021
Amortization expense | $ | 18,918 |  |  | $ | 25,717 |  |  | $ | 35,801 |

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