CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2015

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 three months ended March 31, 2015 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2015	$	29,932		$	20,769		$	50,701
New asset retirement obligations	753			—			753
Accretion	682			496			1,178
Changes in estimates recorded to statement of income	—			(24		)	(24		)
Changes in estimates recorded to balance sheet	(932		)	—			(932		)
Expenditures	(246		)	(19		)	(265		)
Currency translation and other	(196		)	(95		)	(291		)
Balance at March 31, 2015	$	29,993		$	21,127		$	51,120