INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Inventory [Line Items]
Inventory adjustment for lower of cost or market	$ 791	$ 0
Replacement parts, depreciation	1 year
Raw Materials	3,994		5,198
Finished Goods	1,029		1,102
Processing Costs	504		477
Total (unaudited in 2014)	5,527		6,777
Ferrous materials [Member]
Inventory [Line Items]
Inventory adjustment for lower of cost or market	800
Stainless steel, ferrous and non-ferrous materials [Member]
Inventory [Line Items]
Raw Materials	2,754		3,827
Finished Goods	962		1,043
Processing Costs	504		477
Total (unaudited in 2014)	4,220		5,347
Waste equipment machinery [Member]
Inventory [Line Items]
Raw Materials	0		0
Finished Goods	45		46
Processing Costs	0		0
Total (unaudited in 2014)	45		46
Other [Member]
Inventory [Line Items]
Raw Materials	0		0
Finished Goods	22		13
Processing Costs	0		0
Total (unaudited in 2014)	22		13
Total inventories for sale [Member]
Inventory [Line Items]
Raw Materials	2,754		3,827
Finished Goods	1,029		1,102
Processing Costs	504		477
Total (unaudited in 2014)	4,287		5,406
Replacement parts [Member]
Inventory [Line Items]
Raw Materials	1,240		1,371
Finished Goods	0		0
Processing Costs	0		0
Total (unaudited in 2014)	$ 1,240		$ 1,371