Annual report pursuant to Section 13 and 15(d)

Revenue (Remaining Performance Obligations) (Details)

v3.19.3.a.u2
Revenue (Remaining Performance Obligations) (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Total $ 516,259
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 203,814
Remaining Performance Obligations  
Revenue recognition period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 131,567
Remaining Performance Obligations  
Revenue recognition period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 90,416
Remaining Performance Obligations  
Revenue recognition period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 41,141
Remaining Performance Obligations  
Revenue recognition period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 22,867
Remaining Performance Obligations  
Revenue recognition period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue from Contract with Customer [Abstract]  
Total $ 26,454
Remaining Performance Obligations  
Revenue recognition period