Annual report pursuant to Section 13 and 15(d)

REVENUE (Details)

v3.10.0.1
REVENUE (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenue $ 1,821,565 $ 1,673,957 $ 1,573,477
UNITED STATES      
Revenue 1,677,116 1,541,336 1,455,196
Non-US [Member]      
Revenue $ 144,449 $ 132,621 $ 118,281