Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.10.0.1
Income Taxes - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating Loss Carryforwards [Line Items]      
Income tax expense (benefit) from the Tax Act $ 0.6 $ 32.4  
Valuation allowance, change in amount (2.5) $ (8.4) $ 6.3
Unrecognized tax benefits that would impact effective tax rate 28.2    
Research Tax Credit Carryforward      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforward 23.0    
California and New Jersey Research Tax Credit Carryforward      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforward 22.7    
Internal Revenue Service (IRS)      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforward 229.9    
State and Local Jurisdiction      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforward $ 125.3