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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Net operating loss carryforwards $ 66.6 $ 67.2
Deferred revenue 0.2 1.2
Stock compensation expense 3.6 4.5
Research and development credits 19.9 17.3
Lease liability 35.2 22.4
Section 174 capitalized costs 21.2 0.0
Accrued expenses and liabilities 10.8 14.2
Other, net 3.4 4.5
Total gross deferred tax assets 160.9 131.3
Less valuation allowance (42.4) (38.5)
Total deferred tax assets 118.5 92.8
Deferred tax liabilities:    
Intangible assets 93.8 104.9
Lease right-of-use assets 25.4 20.2
Property, plant and equipment 2.8 3.5
Total deferred tax liabilities 122.0 128.6
Net deferred tax liability $ (3.5) $ (35.8)