CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2020

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, 2020 through March 31, 2020 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2020	$	39,401		$	36,250		$	75,651
New asset retirement obligations	590			—			590
Accretion	705			820			1,525
Changes in estimates recorded to statement of operations	4,180			(67		)	4,113
Expenditures	(521		)	(320		)	(841		)
Currency translation and other	(453		)	(146		)	(599		)
Balance at March 31, 2020	$	43,902		$	36,537		$	80,439