CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2014

Asset Retirement Obligation Disclosure [Abstract]

Schedule of closure and post-closure liabilities

The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) for the nine months ended September 30, 2014 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2014	$	27,604		$	19,481		$	47,085
New asset retirement obligations	2,676			—			2,676
Accretion	1,912			1,399			3,311
Changes in estimates recorded to statement of income	(722		)	142			(580		)
Changes in estimates recorded to balance sheet	(103		)	—			(103		)
Expenditures	(1,568		)	(476		)	(2,044		)
Currency translation and other	(137		)	(82		)	(219		)
Balance at September 30, 2014	$	29,662		$	20,464		$	50,126