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Intangible Assets
3 Months Ended
Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
Intangible assets consisted of the following:
 As of March 31,As of December 31,
Weighted-
average
remaining
useful life
(In years)
As of March 31,
 202220212022
Developed technology$45.9 $45.9 3.5
Customer relationships28.6 28.6 3.4
Patents19.5 19.5 5.1
Software9.0 9.0 1.1
Trademarks and trade names5.6 5.6 2.5
Licenses4.6 4.6 
Assembled workforce in asset acquisitions3.0 3.0 
Other1.2 0.8 3.5
Total intangibles117.4 117.0 
Accumulated amortization(67.4)(63.4)
Intangible assets, net$50.0 $53.6 
Amortization expense was $4.0 million and $3.1 million for the three months ended March 31, 2022 and 2021, respectively.

Expected future amortization expense for intangible assets as of March 31, 2022 is as follows:

202211.4 
202314.9 
202410.5 
20258.0 
20263.7 
Thereafter1.5 
Total$50.0