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Intangible Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2022
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, 2022 |  | December 31, 2021
In thousands | Gross |  | Accumulated (Amortization) Accretion |  | Net |  | Gross |  | Accumulated (Amortization) Accretion |  | Net
Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Core-developed technology | $ | 491,898 |  |  | $ | (484,225) |  |  | $ | 7,673 |  |  | $ | 505,429 |  |  | $ | (491,047) |  |  | $ | 14,382 |
Customer contracts and relationships | 307,838 |  |  | (247,555) |  |  | 60,283 |  |  | 336,421 |  |  | (261,043) |  |  | 75,378 |
Trademarks and trade names | 69,562 |  |  | (67,416) |  |  | 2,146 |  |  | 74,551 |  |  | (72,133) |  |  | 2,418 |
Other | 12,011 |  |  | (11,767) |  |  | 244 |  |  | 12,021 |  |  | (11,670) |  |  | 351 |
Total intangible assets | $ | 881,309 |  |  | $ | (810,963) |  |  | $ | 70,346 |  |  | $ | 928,422 |  |  | $ | (835,893) |  |  | $ | 92,529 |
Intangible Liabilities |  |  |  |  |  |  |  |  |  |  |
Customer contracts and relationships | $ | (23,900) |  |  | $ | 23,785 |  |  | $ | (115) |  |  | $ | (23,900) |  |  | $ | 23,441 |  |  | $ | (459) |
Summary of Intangible Asset Account Activity | A summary of intangible assets and liabilities activity is as follows:
| Nine Months Ended September 30,
In thousands | 2022 |  | 2021
Intangible assets, gross beginning balance | $ | 928,422 |  |  | $ | 1,000,037 |
Effect of change in exchange rates | (47,113) |  |  | (21,109) |
Intangible assets, gross ending balance | $ | 881,309 |  |  | $ | 978,928 |
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 (accretion) is as follows:
Year Ending December 31, |  | Amortization |  | Accretion |  | Estimated Annual Amortization, net
In thousands |  |
2022 (amount remaining at September 30, 2022) |  | $ | 6,457 |  |  | $ | (115) |  |  | $ | 6,342 |
2023 |  | 18,616 |  |  | — |  |  | 18,616 |
2024 |  | 14,748 |  |  | — |  |  | 14,748 |
2025 |  | 14,080 |  |  | — |  |  | 14,080 |
2026 |  | 10,160 |  |  | — |  |  | 10,160 |
Thereafter |  | 6,285 |  |  | — |  |  | 6,285 |
Total intangible assets subject to amortization (accretion) |  | $ | 70,346 |  |  | $ | (115) |  |  | $ | 70,231 |

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