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Intangible Assets
12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
Intangible assets consisted of the following:
 As of December 31,As of December 31,
Weighted-
average
remaining
useful life
(In years)
As of December 31,
 202320222023
Developed technology$74.3 $74.3 3.5
Customer relationships43.2 43.2 1.3
Patents19.4 19.4 3.4
Software8.9 8.9 0.0
Trademarks and trade names5.8 5.8 1.6
Licenses4.6 4.6 0.0
Assembled workforce in asset acquisitions3.4 3.4 2.3
Other1.3 1.1 1.8
Total intangibles160.9 160.7 
Accumulated amortization(102.8)(72.4)
Intangible assets, net$58.1 $88.3 
Amortization expense was $30.4 million, $16.3 million and $15.6 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Expected future amortization expense for intangible assets as of December 31, 2023 is as follows:

Intangible assets
2024$25.1 
202514.8 
202610.4 
20277.0 
20280.2 
Thereafter0.6 
Total$58.1