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Revenues (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]      
Performance obligations satisfied or partially satisfied in previous periods $ 8.3 $ 6.4  
Contract asset     $ 1.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01      
Revenue from Contract with Customer [Abstract]      
Unfulfilled performance obligations     $ 2.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Performance obligation expected duration     24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01      
Revenue from Contract with Customer [Abstract]      
Unfulfilled performance obligations $ 1.4    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Performance obligation expected duration 24 months