CLOSURE AND POST-CLOSURE LIABILITIES

3 Months Ended

Mar. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

CLOSURE AND POST-CLOSURE LIABILITIES

CLOSURE AND POST-CLOSURE LIABILITIES

The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) from January 1, 2018 through March 31, 2018 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2018	$	32,382		$	28,655		$	61,037
Liabilities assumed in acquisition	—			604			604
New asset retirement obligations	1,053			—			1,053
Accretion	646			619			1,265
Changes in estimates recorded to statement of operations	—			30			30
Changes in estimates recorded to balance sheet	441			—			441
Expenditures	(155		)	(62		)	(217		)
Currency translation and other	(78		)	(55		)	(133		)
Balance at March 31, 2018	$	34,289		$	29,791		$	64,080

All of the landfill facilities included in the above were active as of March 31, 2018. There were no significant charges (benefits) in 2018 resulting from changes in estimates for closure and post-closure liabilities.

New asset retirement obligations incurred during the first three months of 2018 were discounted at the credit-adjusted risk-free rate of 5.66%.