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Goodwill and Intangible Assets
3 Months Ended
Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill

There were no changes to the carrying amount of goodwill during the three months ended March 31, 2024 and 2023. No goodwill impairment was recorded during the three months ended March 31, 2024 and 2023.

Intangible Assets, Net

The following table summarizes intangible assets:

March 31, 2024December 31, 2023
(in thousands)Gross carrying amountAccumulated AmortizationNet carrying amountGross carrying amountAccumulated AmortizationNet carrying amount
Definite-lived intangible assets$44,426 $(12,336)$32,090 $44,426 $(8,969)$35,457 
Indefinite-lived intangible assets986 — 986 986 — 986 
Intangible assets, net$45,412 $(12,336)$33,076 $45,412 $(8,969)$36,443 
Amortization expense was $3.4 million and $152 thousand during the three months ended March 31, 2024 and 2023, respectively. The increase in amortization expense was due to the intangible assets purchased in the acquisitions, (see Note 4, “Acquisitions” for additional details). Amortization expense was included in Research and Development in the Condensed Consolidated Statements of Operations. No indefinite-lived intangible asset impairment charges were recorded during the three months ended March 31, 2024 and 2023.