Quarterly report pursuant to Section 13 or 15(d)

REVENUE (Details)

v3.20.2
REVENUE (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax $ 583,698 $ 556,466 $ 1,624,928 $ 1,509,492
UNITED STATES        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 540,763 516,022 1,510,684 1,395,189
Non-US [Member]        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax $ 42,935 $ 40,444 $ 114,244 $ 114,303