Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2021

Asset Retirement Obligation Disclosure [Abstract]

Schedule of asset retirement obligations

The following table describes the changes in our AROs (both current and long-term) (in thousands):

	2021		2020
AROs at January 1,	$	30,913	$	28,258
Accretion expense		48		676
AROs at March 31,	$	30,961	$	28,934