INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Inventory [Line Items]
Replacement parts, depreciation	1 year
Raw Materials	$ 19,396	$ 14,061
Finished Goods	1,288	1,505
Processing Costs	1,081	963
Total	21,765	16,529
Stainless steel, ferrous and non-ferrous materials [Member]
Inventory [Line Items]
Raw Materials	17,852	12,519
Finished Goods	1,204	1,412
Processing Costs	1,081	963
Total	20,137	14,894
Waste equipment machinery [Member]
Inventory [Line Items]
Raw Materials	0	0
Finished Goods	57	57
Processing Costs	0	0
Total	57	57
Other [Member]
Inventory [Line Items]
Raw Materials	0	0
Finished Goods	27	36
Processing Costs	0	0
Total	27	36
Total inventories for sale [Member]
Inventory [Line Items]
Raw Materials	17,852	12,519
Finished Goods	1,288	1,505
Processing Costs	1,081	963
Total	20,221	14,987
Replacement parts [Member]
Inventory [Line Items]
Raw Materials	1,544	1,542
Finished Goods	0	0
Processing Costs	0	0
Total	$ 1,544	$ 1,542