Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Property, Plant and Equipment [Table Text Block]

	June 30, 2023		December 31, 2022
Land	$	2,139	$	2,139
Transportation equipment		693		691
Buildings		537		544
Leasehold improvements		217		206
Field equipment		5		6
Furniture and fixtures		1		1
Total other property and equipment, net	$	3,592	$	3,587