COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2017

COMMITMENTS AND CONTINGENCIES [Abstract]

Future Minimum Rental Commitments for Non-cancelable Leases

The Company leases equipment, automobiles and office facilities under various operating leases. The future minimum rental commitments as of December 31, 2017, for non-cancelable leases are as follows (in thousands):

2018	$	19,419
2019		15,002
2020		11,492
2021		9,435
2022		6,637
Thereafter		3,441