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Goodwill and Other Intangible Assets, Net
 6 Months Ended
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets, Net Goodwill and Other Intangible Assets, Net
The change in the carrying amount of goodwill was as follows:
(in millions)
Balance at December 31, 2024
$51.5 
Foreign currency translation
0.1 
Balance at June 30, 2025
$51.7 
The gross carrying amount, accumulated amortization and net book value of intangible assets at the end of each period were as follows:
June 30, 2025December 31, 2024
(in millions)
Gross
Carrying Amount		Accumulated AmortizationNet
Book Value		Gross
Carrying Amount		Accumulated AmortizationNet
Book Value
Customer relationships$43.2 $(34.7)$8.5 $43.1 $(33.5)$9.6 
Internal-use software56.6 (12.4)44.2 52.4 (15.6)36.8 
Developed technology27.4 (5.9)21.5 27.4 (4.9)22.5 
Patents36.3 (8.2)28.1 36.2 (6.5)29.6 
Total intangible assets$163.5 $(61.3)$102.3 $159.1 $(60.6)$98.5 
Amortization expense for intangible assets was $2.6 million and $2.4 million for the three months ended June 30, 2025 and 2024, respectively, and was $5.0 million and $4.8 million for the six months ended June 30, 2025 and 2024, respectively.