INVENTORIES AND SUPPLIES (Tables)

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory

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

	March 31, 2017		December 31, 2016
Oil and oil products	$	55,872	$	52,158
Supplies and drums	91,210		90,610
Solvent and solutions	8,865		8,566
Modular camp accommodations	14,859		15,255
Other	11,232		11,839
Total inventories and supplies	$	182,038	$	178,428