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INTANGIBLE ASSETS AND GOODWILL (Tables) | 9 Months Ended
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Sep. 30, 2024
INTANGIBLE ASSETS AND GOODWILL |
Schedule of intangible assets | The Company’s intangible assets at September 30, 2024 and December 31, 2023 consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | amortization | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Net
​ | ​ | period |  | ​ | ​ |  | Accumulated |  | carrying
September 30, 2024 |  | (years) | ​ | Cost |  | amortization |  | value
Developed technology | ​ | 7.84 | ​ | $ | 340,380 | ​ | $ | 257,078 | ​ | $ | 83,302
Customer relationships | ​ | 11.86 | ​ | ​ | 268,140 | ​ | ​ | 154,346 | ​ | ​ | 113,794
Trade names | ​ | 3.88 | ​ | ​ | 5,000 | ​ | ​ | 4,969 | ​ | ​ | 31
Software licenses |  | 3.00 |  | ​ | 5,748 |  | ​ | 3,553 |  | ​ | 2,195
​ |  | 9.50 | ​ | $ | 619,268 | ​ | $ | 419,946 | ​ | $ | 199,322
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | amortization | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Net
​ | ​ | period |  | ​ | ​ |  | Accumulated |  | carrying
December 31, 2023 |  | (years) | ​ | Cost |  | amortization |  | value
Developed technology | ​ | 7.84 | ​ | $ | 340,380 | ​ | $ | 239,066 | ​ | $ | 101,314
Customer relationships | ​ | 11.86 | ​ | ​ | 268,140 | ​ | ​ | 134,743 | ​ | ​ | 133,397
Trade names | ​ | 3.88 | ​ | ​ | 5,000 | ​ | ​ | 4,901 | ​ | ​ | 99
Software licenses |  | 3.00 |  | ​ | 5,436 |  | ​ | 2,159 |  | ​ | 3,277
​ |  | 9.51 | ​ | $ | 618,956 | ​ | $ | 380,869 | ​ | $ | 238,087
Schedule of estimated future amortization expense for intangible assets | Estimated future amortization expense for the Company’s intangible assets at September 30, 2024 was as follows (in thousands):
​ | ​ | ​ | ​
Years ending December 31, |  |  | ​
Remainder of 2024 | ​ | $ | 11,785
2025 | ​ |  | 44,192
2026 | ​ |  | 39,143
2027 | ​ |  | 33,979
2028 | ​ |  | 23,400
2029 | ​ |  | 18,379
Thereafter | ​ | ​ | 28,444
​ | ​ | $ | 199,322
Schedule of goodwill | There were no changes to the carrying value of the Company’s goodwill in the nine months ended September 30, 2024 and 2023. The components of goodwill at both September 30, 2024 and 2023 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Cloud and |  | IP Optical |  | ​ | ​
​ | ​ | Edge | ​ | Networks | ​ | Total
Goodwill | ​ | $ | 392,302 | ​ | $ | 191,996 | ​ | $ | 584,298
Accumulated impairment losses | ​ |  | (167,406) | ​ |  | (116,000) | ​ |  | (283,406)
​ | ​ | $ | 224,896 | ​ | $ | 75,996 | ​ | $ | 300,892
​

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