DISCLOSURE OF SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 31, 2012 U.S. Ecology Michigan, Inc.
Income taxes and interest paid:
Income taxes paid, net of receipts	$ 16,226	$ 17,676	$ 13,360
Interest paid	703	791	1,277
Non-cash investing and financing activities:
Closure/Post-closure retirement asset	886	921	93
Capital expenditures in accounts payable	1,561	762	776
Restricted stock issued from treasury shares	864	372	424
Allocation of the purchase price to the fair value of assets acquired and liabilities assumed
Assets acquired				10,706
Liabilities assumed				(1,268)
Total identifiable net assets				9,438
Goodwill	21,693	23,105	21,200	1,327
Total purchase price				$ 10,765