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INTANGIBLE ASSETS AND GOODWILL | 6 Months Ended
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Jun. 30, 2025
INTANGIBLE ASSETS AND GOODWILL |
INTANGIBLE ASSETS AND GOODWILL | (4) INTANGIBLE ASSETS AND GOODWILL The Company’s intangible assets at June 30, 2025 and December 31, 2024 consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | amortization | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Net
​ | ​ | period |  | ​ | ​ |  | Accumulated |  | carrying
June 30, 2025 |  | (years) | ​ | Cost |  | amortization |  | value
Developed technology | ​ | 7.84 | ​ | $ | 340,380 | ​ | $ | 271,792 | ​ | $ | 68,588
Customer relationships | ​ | 11.86 | ​ | ​ | 268,140 | ​ | ​ | 172,746 | ​ | ​ | 95,394
Trade names | ​ | 3.88 | ​ | ​ | 5,000 | ​ | ​ | 4,997 | ​ | ​ | 3
Software licenses |  | 3.00 |  | ​ | 5,748 |  | ​ | 4,991 |  | ​ | 757
​ |  | ​ | ​ | $ | 619,268 | ​ | $ | 454,526 | ​ | $ | 164,742
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | amortization | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Net
​ | ​ | period |  | ​ | ​ |  | Accumulated |  | carrying
December 31, 2024 |  | (years) | ​ | Cost |  | amortization |  | value
Developed technology | ​ | 7.84 | ​ | $ | 340,380 | ​ | $ | 262,085 | ​ | $ | 78,295
Customer relationships | ​ | 11.86 | ​ | ​ | 268,140 | ​ | ​ | 160,635 | ​ | ​ | 107,505
Trade names | ​ | 3.88 | ​ | ​ | 5,000 | ​ | ​ | 4,978 | ​ | ​ | 22
Software licenses |  | 3.00 |  | ​ | 5,748 |  | ​ | 4,033 |  | ​ | 1,715
​ |  | ​ | ​ | $ | 619,268 | ​ | $ | 431,731 | ​ | $ | 187,537
​ Estimated future amortization expense for the Company’s intangible assets at June 30, 2025 was as follows (in thousands):
​ | ​ | ​ | ​
Years ending December 31, |  |  | ​
Remainder of 2025 | ​ | $ | 21,397
2026 | ​ |  | 39,143
2027 | ​ |  | 33,979
2028 | ​ |  | 23,400
2029 | ​ |  | 18,379
2030 | ​ | ​ | 7,722
Thereafter | ​ | ​ | 20,722
​ | ​ | $ | 164,742
​ There were no changes to the carrying value of the Company’s goodwill in the six months ended June 30, 2025 and 2024. The components of goodwill at both June 30, 2025 and 2024 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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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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