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Goodwill and Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of the Carrying Amount of Goodwill
The following table presents the changes in the carrying amount of goodwill. Goodwill is included in other noncurrent assets in our condensed consolidated balance sheets.
(in millions)
Balance as of December 31, 2023
$5.8 
Foreign currency translation adjustments0.3 
Balance as of September 30, 2024
$6.1 
Schedule of Information Relating to our Recognized Intangible Assets
The following table presents information relating to our recognized intangible assets.
September 30,
2024		December 31,
2023
(dollars in millions)Useful LifeGross Carrying AmountAccumulated AmortizationNet
Carrying Amount		Gross Carrying AmountAccumulated AmortizationNet
Carrying Amount
Developed product rights10 years$37.9 $7.3 $30.6 $35.9 $4.0 $31.9 
Acquired IPR&DIndefinite$3.9 $— 3.9 $3.6 $— 3.6 
Total intangible assets, net$34.5 $35.5 
Schedule of Information Relating to our Recognized Intangible Assets
The following table presents information relating to our recognized intangible assets.
September 30,
2024		December 31,
2023
(dollars in millions)Useful LifeGross Carrying AmountAccumulated AmortizationNet
Carrying Amount		Gross Carrying AmountAccumulated AmortizationNet
Carrying Amount
Developed product rights10 years$37.9 $7.3 $30.6 $35.9 $4.0 $31.9 
Acquired IPR&DIndefinite$3.9 $— 3.9 $3.6 $— 3.6 
Total intangible assets, net$34.5 $35.5 
Schedule of Estimated Annual Amortization Expense for our Finite-Lived Intangible Assets
The following table presents approximate future annual amortization expense for our finite-lived intangible assets as of September 30, 2024.
(in millions)
2024 (3 months remaining)
$0.9 
2025
$3.8 
2026
$3.8 
2027
$3.8 
2028
$3.8 
Thereafter$14.5