Quarterly report pursuant to Section 13 or 15(d)

REVENUE -Remaining Performance Obligations (Details)

v3.20.1
REVENUE -Remaining Performance Obligations (Details)
$ in Thousands
Mar. 31, 2020
USD ($)
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 468,404
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01  
Transaction price allocated to the remaining performance obligations  
Remaining performance obligation $ 154,903
Expected timing of satisfaction 9 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 $ 122,427
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 $ 73,991
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 $ 117,083
Expected timing of satisfaction