Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

v3.8.0.1
COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating leases      
Rental Expense $ 72,030 $ 66,774 $ 60,508
Future commitments under operating leases      
2018 34,112    
2019 24,890    
2020 21,355    
2021 17,358    
2022 14,313    
Thereafter 31,511    
Total minimum obligation $ 143,539