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INTANGIBLE ASSETS AND GOODWILL (Tables) | 3 Months Ended
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Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets | The Company's intangible assets at March 31, 2023 and December 31, 2022 consisted of the following (in thousands):
March 31, 2023 | Weighted average amortization period (years) |  | Cost |  | Accumulated amortization |  | Net carrying value
Developed technology | 7.84 |  | $ | 340,380 |  |  | $ | 219,471 |  |  | $ | 120,909 |
Customer relationships | 11.86 |  | 268,140 |  |  | 113,497 |  |  | 154,643 |
Trade names | 3.88 |  | 5,000 |  |  | 4,810 |  |  | 190 |
Software licenses | 3.00 |  | 5,186 |  |  | 853 |  |  | 4,333 |
| 9.51 |  | $ | 618,706 |  |  | $ | 338,631 |  |  | $ | 280,075 |
December 31, 2022 | Weighted average amortization period (years) |  | Cost |  | Accumulated amortization |  | Net carrying value
Developed technology | 7.84 |  | $ | 340,380 |  |  | $ | 212,448 |  |  | $ | 127,932 |
Customer relationships | 11.86 |  | 268,140 |  |  | 106,385 |  |  | 161,755 |
Trade names | 3.88 |  | 5,000 |  |  | 4,658 |  |  | 342 |
Software licenses | 3.00 |  | 5,186 |  |  | 487 |  |  | 4,699 |
| 9.51 |  | $ | 618,706 |  |  | $ | 323,978 |  |  | $ | 294,728 |
Schedule of Estimated Future Amortization Expense for Intangible Assets | Estimated future amortization expense for the Company's intangible assets at March 31, 2023 was as follows (in thousands):
Years ending December 31, |
Remainder of 2023 | $ | 42,229 |
2024 | 50,717 |
2025 | 44,006 |
2026 | 38,965 |
2027 | 33,936 |
2028 | 23,400 |
Thereafter | 46,822 |
| $ | 280,075 |
Schedule of Goodwill | There were no changes to the carrying value of the Company's goodwill in the three months ended March 31, 2023 and 2022. The components of goodwill at March 31, 2023 and 2022 were as follows (in thousands):
| Cloud and Edge |  | IP Optical Networks |  | Total
Balance at March 31, 2023 |  |  |  |  |
Goodwill | $ | 392,302 |  |  | $ | 191,996 |  |  | $ | 584,298 |
Accumulated impairment losses | (167,406) |  |  | (116,000) |  |  | (283,406) |
| $ | 224,896 |  |  | $ | 75,996 |  |  | $ | 300,892 |
Balance at March 31, 2022 |  |  |  |  |
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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