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Revenue - Remaining Performance Obligations (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Remaining performance obligations $ 234,859
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations, percentage 70.00%
Remaining performance obligation, expected timing 24 months