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INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Net operating loss carryforwards $ 62.7 $ 77.1
Stock compensation expense 6.6 5.0
Research and development credits 20.6 20.8
Lease liability 24.4 28.0
Capitalized research and development costs 54.3 38.4
Accrued expenses and liabilities 16.5 22.5
Other, net 0.0 3.2
Total gross deferred tax assets 185.1 195.0
Less valuation allowance (111.9) (95.0)
Total deferred tax assets 73.2 100.0
Deferred tax liabilities:    
Intangible assets 55.5 84.2
Lease right-of-use assets 13.3 15.5
Property, plant and equipment 3.2 1.9
Other, net 0.8 0.0
Total deferred tax liabilities 72.8 101.6
Net deferred tax asset (liability) $ 0.4  
Net deferred tax asset (liability)   $ (1.6)