CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2022

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, 2022 through June 30, 2022 were as follows (in thousands):

	Landfill Retirement Liability		Non-Landfill Retirement Liability		Total
Balance at January 1, 2022	$	53,425	$	45,678	$	99,103
New asset retirement obligations	1,657		—		1,657
Accretion	2,250		1,993		4,243
Changes in estimates recorded to consolidated statement of operations	329		47		376
Changes in estimates recorded to consolidated balance sheet	—		504		504
Expenditures	(2,126)		(622)		(2,748)
Currency translation and other	(100)		(38)		(138)
Balance at June 30, 2022	$	55,435	$	47,562	$	102,997