INVENTORIES AND SUPPLIES (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory

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

	June 30, 2017		December 31, 2016
Oil and oil products	$	57,554	$	52,158
Supplies and drums	92,995		90,610
Solvent and solutions	8,575		8,566
Modular camp accommodations	2,699		15,255
Other	10,717		11,839
Total inventories and supplies	$	172,540	$	178,428