CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2016

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”) from January 1, 2016 through March 31, 2016 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2016	$	32,023		$	24,226		$	56,249
Adjustments during the measurement period related to acquisitions	—			657			657
New asset retirement obligations	621			—			621
Accretion	691			567			1,258
Changes in estimates recorded to statement of operations	(283		)	(132		)	(415		)
Expenditures	(112		)	(391		)	(503		)
Currency translation and other	156			67			223
Balance at March 31, 2016	$	33,096		$	24,994		$	58,090