CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019 through September 30, 2019 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2019	$	37,809		$	32,122		$	69,931
Liabilities assumed in acquisitions	—			220			220
New asset retirement obligations	1,644			—			1,644
Accretion	2,113			2,100			4,213
Changes in estimates recorded to statement of operations	—			142			142
Changes in estimates recorded to balance sheet	3,803			—			3,803
Expenditures	(4,310		)	(1,795		)	(6,105		)
Currency translation and other	142			169			311
Balance at September 30, 2019	$	41,201		$	32,958		$	74,159