COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of operating leases

The Company leases buildings, vehicles and equipment under operating leases, some of which contain escalation clauses. The Company’s operating leases expire at various dates through 2028:

For the years ended December 31,	2018		2017		2016
(in thousands)
Rental Expense	$	79,631	$	72,030	$	66,774

Schedule of future commitments under operating leases

Future commitments under operating leases are as summarized:

(in thousands)	Operating leases
2019	$	28,751
2020		18,024
2021		14,463
2022		11,142
2023		8,998
Thereafter		16,234
Total minimum obligation	$	97,612