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ASSET RETIREMENT OBLIGATIONS AND RESTRICTED CASH (Tables)

9 Months Ended

Sep. 30, 2020

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

The following table summarizes the Company’s asset retirement obligations:

			September 30, 2020						December 31, 2019
Asset retirement obligation, beginning of period			$	18,972					$	19,104
Revision of estimate			—						(2,063)
Accretion of liabilities			1,434						1,931
Asset retirement obligation, end of period			$	20,406					$	18,972
Asset retirement obligation:
Current			$	46					$	46
Non-current			20,360						18,926
Asset retirement obligation, end of period			$	20,406					$	18,972

Schedule of Restricted Cash and Cash Equivalents

The following table summarizes the Company’s restricted cash:

			September 30, 2020						December 31, 2019
Restricted cash, beginning of period			$	20,081					$	19,652
Additional collateral posted			179						429
Refunds of collateral			(32)						—
Restricted cash, end of period			$	20,228					$	20,081

Cash, cash equivalents and restricted cash are included in the following accounts at September 30, 2020 and December 31, 2019:

			September 30, 2020						December 31, 2019
Cash and cash equivalents			$	26,584					$	12,810
Restricted cash included in other long-term assets			20,228						20,081
Total cash, cash equivalents and restricted cash			$	46,812					$	32,891

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Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

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Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage.

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