INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories for ferrous and non-ferrous materials

Inventories for ferrous and non-ferrous materials as of June 30, 2018 and December 31, 2017 consist of the following: 

	June 30, 2018
	(unaudited)		December 31, 2017
	(in thousands)
Raw materials	$	5,616	$	3,046
Finished goods	1,428		1,366
Processing costs	945		694
Total inventories for sale	$	7,989	$	5,106