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

3 Months Ended

Mar. 31, 2023

Notes Tables

Property, Plant and Equipment [Table Text Block]

	March 31, 2023		December 31, 2022
Land	$	2,139	$	2,139
Transportation equipment		649		691
Buildings		540		544
Leasehold improvements		221		206
Field equipment		6		6
Furniture and fixtures		1		1
Total other property and equipment, net	$	3,556	$	3,587