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Intangible Assets and Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2024
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, 2024 |  | December 31, 2023
In thousands | Gross |  | Accumulated (Amortization) Accretion |  | Net |  | Gross |  | Accumulated (Amortization) Accretion |  | Net
Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Core-developed technology | $ | 512,185 |  |  | $ | (498,767) |  |  | $ | 13,418 |  |  | $ | 502,010 |  |  | $ | (499,571) |  |  | $ | 2,439 |
Customer contracts and relationships | 327,053 |  |  | (289,556) |  |  | 37,497 |  |  | 329,688 |  |  | (287,653) |  |  | 42,035 |
Trademarks and trade names | 72,495 |  |  | (70,925) |  |  | 1,570 |  |  | 73,461 |  |  | (71,740) |  |  | 1,721 |
Other | 12,019 |  |  | (11,960) |  |  | 59 |  |  | 12,019 |  |  | (11,932) |  |  | 87 |
Total intangible assets | $ | 923,752 |  |  | $ | (871,208) |  |  | $ | 52,544 |  |  | $ | 917,178 |  |  | $ | (870,896) |  |  | $ | 46,282 |
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:
| Six Months Ended June 30,
In thousands | 2024 |  | 2023
Intangible assets, gross beginning balance | $ | 917,178 |  |  | $ | 905,134 |
Intangible assets acquired (1) | 15,000 |  |  | — |
Effect of change in exchange rates | (8,426) |  |  | 7,202 |
Intangible assets, gross ending balance | $ | 923,752 |  |  | $ | 912,336 |
Intangible liabilities, gross beginning balance | $ | (23,900) |  |  | $ | (23,900) |
Effect of change in exchange rates | — |  |  | — |
Intangible liabilities, gross ending balance | $ | (23,900) |  |  | $ | (23,900) |
(1) On March 1, 2024, we completed the acquisition of 100% of the shares Elpis2, Inc. (Elpis Squared), a privately held software and services company. The purchase resulted in the addition of intangible assets of $15.0 million including $12.5 million identified core-developed technology and $2.5 million of customer contracts and relationships. The core-developed technology and customer contract and relationships will be amortized over the weighted-average five-year and three-year useful lives, respectively, using the straight-line method. Refer to Note 5: Goodwill and Note 17: Business Combination for additional information.
Schedule of Intangible Assets, Future Amortization Expense | Estimated future annual amortization is as follows:
Year Ending December 31, |  | Estimated Annual Amortization |  |  |  |
In thousands |  |
2024 (amount remaining at June 30, 2024) |  | $ | 9,334 |  |  |  |  |
2025 |  | 17,660 |  |  |  |  |
2026 |  | 13,652 |  |  |  |  |
2027 |  | 8,275 |  |  |  |  |
2028 |  | 2,681 |  |  |  |  |
Thereafter |  | 942 |  |  |  |  |
Total intangible assets subject to amortization |  | $ | 52,544 |  |  |  |  |

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