Accrued Closure Costs and ARO (Tables)

12 Months Ended

Dec. 31, 2019

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, 2019 and 2018, were as follows:

Amounts in thousands
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
Accretion expense		320
Spending		(1,359	)
Adjustment to closure liability		330
Balance as of December 31, 2019	$	6,041

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, 2019 and 2018 with the following activity for the years ended December 31, 2019 and 2018:

Amounts in thousands
Balance as of December 31, 2017	$	3,921
Amortization of closure and post-closure asset		(191	)
Balance as of December 31, 2018		3,730
Amortization of closure and post-closure asset		(191	)
Balance as of December 31, 2019	$	3,539