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Revenue Recognition - Remaining Performance Obligations (Details)
$ in Millions
Mar. 31, 2021
USD ($)
Revenue Recognition  
Remaining Performance Obligations $ 62.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01  
Revenue Recognition  
Remaining Performance Obligations $ 50.1
Remaining performance obligations  
Remaining Performance Obligations, period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue Recognition  
Remaining Performance Obligations $ 12.2
Remaining performance obligations  
Remaining Performance Obligations, period