CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

6 Months Ended

Jun. 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 six months ended June 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	1,914			—			1,914
Accretion	1,278			921			2,199
Changes in estimates recorded to statement of income	(142		)	238			96
Changes in estimates recorded to balance sheet	363			—			363
Expenditures	(1,322		)	(444		)	(1,766		)
Currency translation and other	1			(10		)	(9		)
Balance at June 30, 2014	$	29,696		$	20,186		$	49,882