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Revenue From Contracts With Customers - Performance Obligations (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Jun. 30, 2019
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation expected to be recognized over next twelve months 70.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation period 12 months