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Revenue Recognition - Remaining Performance Obligations - Additional Information (Details 1)
$ in Millions
Sep. 30, 2020
USD ($)
Subscription and Other Contracts  
Disaggregation Of Revenue [Line Items]  
Revenue remaining performance obligation $ 322.6
Subscription and Other Contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01  
Disaggregation Of Revenue [Line Items]  
Revenue remaining performance obligation $ 189.0
Remaining performance obligation recognition period 12 months
Professional Services  
Disaggregation Of Revenue [Line Items]  
Revenue remaining performance obligation $ 8.7
Professional Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01  
Disaggregation Of Revenue [Line Items]  
Revenue remaining performance obligation $ 7.3
Remaining performance obligation recognition period 12 months