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Acquisition, Goodwill and Intangible Assets - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 02, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]        
Acquisition-related transaction costs   $ 4.0    
Expense related to the intercompany transfer of intellectual property   2.1    
Amortization of intangible assets   $ 0.6 $ 0.6 $ 0.6
INDEGY LTD.        
Business Acquisition [Line Items]        
Cash consideration $ 80.1      
Cash acquired 5.5      
Stock-based compensation expense for unvested options $ 1.8