Quarterly report pursuant to Section 13 or 15(d)

Revenue (Narrative) (Details)

v3.21.1
Revenue (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Revenue from Contract with Customer [Abstract]    
Remaining performance obligations $ 25.4  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Contract with customer, liability, revenue recognized 4.5 $ 3.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01    
Revenue from Contract with Customer [Abstract]    
Remaining performance obligations $ 14.4  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Performance obligations expected to be satisfied, expected timing 12 months