Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes in Our Asset Retirement Liability

The following table describes changes in our asset retirement liability (“ARO”) during each of the years ended December 31, 2018 and 2017.

	2018		2017
ARO liability at January 1	$	35,658	$	27,444
Accretion expense		3,096		2,214
Obligations incurred for development of oil and gas properties		—		6,000
ARO liability at December 31	$	38,754	$	35,658