INVENTORIES AND SUPPLIES (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories and supplies consisted of the following (in thousands):

	September 30, 2018		December 31, 2017
Oil and oil products	$	72,268	$	58,142
Supplies and drums	99,773		94,242
Solvent and solutions	9,200		9,167
Modular camp accommodations	1,657		1,826
Other	13,147		12,635
Total inventories and supplies	$	196,045	$	176,012