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Goodwill and Acquisition-Related Intangible Assets
 9 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Acquisition-Related Intangible Assets Goodwill and Acquisition-Related Intangible Assets
Acquisition-Related Intangible Assets
    Acquisition-related intangible assets, excluding those that are fully amortized, were as follows (in thousands, except years):
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountWeighted Average Remaining Useful Life (in years)
December 31, 2023
AdditionsSeptember 30, 2024
December 31, 2023
AmortizationSeptember 30, 2024
December 31, 2023
September 30, 2024
Developed technology$154,930 $— $154,930 $(102,493)$(12,583)$(115,076)$52,437 $39,854 3.5
Customer relationships54,620 — 54,620 (21,797)(5,777)(27,574)32,823 27,046 4.1
Trade name12,390 — 12,390 (8,882)(1,710)(10,592)3,508 1,798 0.9
Total$221,940 $— $221,940 $(133,172)$(20,070)$(153,242)$88,768 $68,698 3.7
    Amortization expense related to acquisition-related intangible assets was $6.7 million and $8.1 million for the three months ended September 30, 2024 and 2023, respectively, and $20.1 million and $26.7 million for the nine months ended September 30, 2024 and 2023, respectively.
    As of September 30, 2024, future estimated amortization expense related to acquisition-related intangible assets is as follows (in thousands):
Future Amortization Expense
Remainder of 2024$6,690 
202519,642 
202617,260 
202713,436 
202810,037 
Thereafter1,633 
Total $68,698 

Goodwill
There was no change to goodwill for the three and nine months ended September 30, 2024.