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INTANGIBLE ASSETS AND GOODWILL (Tables)
 3 Months Ended
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, 2023Weighted average amortization period
(years)		CostAccumulated
amortization		Net
carrying value
Developed technology7.84$340,380 $219,471 $120,909 
Customer relationships11.86268,140 113,497 154,643 
Trade names3.885,000 4,810 190 
Software licenses3.005,186 853 4,333 
9.51$618,706 $338,631 $280,075 

December 31, 2022Weighted average amortization period
(years)		CostAccumulated
amortization		Net
carrying value
Developed technology7.84$340,380 $212,448 $127,932 
Customer relationships11.86268,140 106,385 161,755 
Trade names3.885,000 4,658 342 
Software licenses3.005,186 487 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 
202450,717 
202544,006 
202638,965 
202733,936 
202823,400 
Thereafter46,822 
$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 EdgeIP Optical NetworksTotal
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