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Revenue Recognition - Remaining Performance Obligations (Details)
$ in Millions
Mar. 31, 2020
USD ($)
Revenue Recognition  
Remaining Performance Obligations $ 64.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01  
Revenue Recognition  
Remaining Performance Obligations $ 41.9
Remaining performance obligations  
Remaining Performance Obligations, period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01  
Revenue Recognition  
Remaining Performance Obligations $ 22.4
Remaining performance obligations  
Remaining Performance Obligations, period