CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

6 Months Ended

Jun. 30, 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 June 30, 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	1,263			—			1,263
Accretion	1,384			1,150			2,534
Changes in estimates recorded to statement of operations	(597		)	(91		)	(688		)
Expenditures	(475		)	(570		)	(1,045		)
Currency translation and other	152			64			216
Balance at June 30, 2016	$	33,750		$	25,436		$	59,186