Annual report pursuant to Section 13 and 15(d)

Accrued Closure Costs and ARO (Tables)

Accrued Closure Costs and ARO (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

Changes to reported closure liabilities (current and long-term) for the years ended December 31, 2018 and 2017, were as follows:

Amounts in thousands
Balance as of December 31, 2016	$	7,315
Accretion expense		460
Spending		(2,037	)
Adjustment to closure liability		2,657
Balance as of December 31, 2017		8,395
Accretion expense		325
Spending		(5,293	)
Adjustment to closure liability		3,323
Balance as of December 31, 2018	$	6,750

Schedule of Asset Retirement Obligations

The reported closure asset or ARO, is reported as a component of “Net Property and equipment” in the Consolidated Balance Sheets at December 31, 2018 and 2017 with the following activity for the years ended December 31, 2018 and 2017:

Amounts in thousands
Balance as of December 31, 2016	$	4,148
Amortization of closure and post-closure asset		(1,071	)
Impairment of closure and post-closure asset		(413	)
Adjustment to closure and post-closure asset		1,257
Balance as of December 31, 2017		3,921
Amortization of closure and post-closure asset		(191	)
Balance as of December 31, 2018	$	3,730