Asset Retirement Obligation (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation [Abstract]

Liability for Asset Retirement Obligations

Below is a schedule of activity in the Company’s liability for AROs for the years ended December 31, 2018 and 2017:

Balance at December 31, 2016	$	959
Additions		—
Accretion		122
Balance at December 31, 2017		1,081
Additions		5
Accretion		130
Balance at December 31, 2018	$	1,216