Quarterly report pursuant to Section 13 or 15(d)

REVENUE -Remaining Performance Obligations (Details)

v3.20.2
REVENUE -Remaining Performance Obligations (Details)
$ in Thousands
Jun. 30, 2020
USD ($)
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 538,860
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01  
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 121,213
Expected timing of satisfaction 6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 154,445
Expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 84,548
Expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 178,654
Expected timing of satisfaction