INVENTORIES (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories for ferrous and non-ferrous materials

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

	March 31, 2018
	(unaudited)		December 31, 2017
	(in thousands)
Raw materials	$	3,713	$	3,046
Finished goods	1,062		1,366
Processing costs	729		694
Total inventories for sale	$	5,504	$	5,106