Note 8 - Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Change in Asset Retirement Obligation [Table Text Block]

	Year Ended December 31, 2021
Beginning asset retirement obligations	$	2,293
Liabilities incurred from new wells		980
Liabilities assumed in acquisitions		981
Liabilities divested		(6	)
Dispositions		(25	)
Revision of estimates (a)		(130	)
Accretion of discount		167
Ending asset retirement obligations	$	4,260