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Intangible Assets and Liabilities (Tables) | 6 Months Ended
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Jun. 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:
| June 30, 2022 |  | December 31, 2021
In thousands | Gross |  | Accumulated (Amortization) Accretion |  | Net |  | Gross |  | Accumulated (Amortization) Accretion |  | Net
Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Core-developed technology | $ | 499,042 |  |  | $ | (489,108) |  |  | $ | 9,934 |  |  | $ | 505,429 |  |  | $ | (491,047) |  |  | $ | 14,382 |
Customer contracts and relationships | 322,882 |  |  | (257,302) |  |  | 65,580 |  |  | 336,421 |  |  | (261,043) |  |  | 75,378 |
Trademarks and trade names | 72,175 |  |  | (69,938) |  |  | 2,237 |  |  | 74,551 |  |  | (72,133) |  |  | 2,418 |
Other | 12,017 |  |  | (11,738) |  |  | 279 |  |  | 12,021 |  |  | (11,670) |  |  | 351 |
Total intangible assets | $ | 906,116 |  |  | $ | (828,086) |  |  | $ | 78,030 |  |  | $ | 928,422 |  |  | $ | (835,893) |  |  | $ | 92,529 |
Intangible Liabilities |  |  |  |  |  |  |  |  |  |  |
Customer contracts and relationships | $ | (23,900) |  |  | $ | 23,670 |  |  | $ | (230) |  |  | $ | (23,900) |  |  | $ | 23,441 |  |  | $ | (459) |
Summary of Intangible Asset Account Activity | A summary of intangible assets and liabilities activity is as follows:
| Six Months Ended June 30,
In thousands | 2022 |  | 2021
Intangible assets, gross beginning balance | $ | 928,422 |  |  | $ | 1,000,037 |
Effect of change in exchange rates | (22,306) |  |  | (9,082) |
Intangible assets, gross ending balance | $ | 906,116 |  |  | $ | 990,955 |
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 June 30, 2022) |  | $ | 13,140 |  |  | $ | (230) |  |  | $ | 12,910 |
2023 |  | 18,967 |  |  | — |  |  | 18,967 |
2024 |  | 15,032 |  |  | — |  |  | 15,032 |
2025 |  | 14,300 |  |  | — |  |  | 14,300 |
2026 |  | 10,303 |  |  | — |  |  | 10,303 |
Thereafter |  | 6,288 |  |  | — |  |  | 6,288 |
Total intangible assets subject to amortization (accretion) |  | $ | 78,030 |  |  | $ | (230) |  |  | $ | 77,800 |

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