CONSOLIDATED STATEMENTS OF OPERATION (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Oil and gas operations, net of royalties	$ 173	$ 243	$ 377	$ 438
Operating expenses
Oil & gas operations	239	256	514	512
Corporate general and administrative	108	122	183	222
Total Operating Expenses	347	378	697	734
Operating earnings (loss)	(174)	(135)	(320)	(296)
Other income (expense)
Interest income	4	11	11	15
Interest expense	(5)	(6)	(11)	(13)
Other income (expense), net	1	6	12	(2)
Total Other income (expense)	0	11	12	0
Loss from continuing operations	(174)	(124)	(308)	(296)
Earnings (loss) from discontinued operations	0	(11)	0	2
Net income (loss) applicable to common shares	$ (174)	$ (135)	$ (308)	$ (294)
Net income (loss) per common share-basic and diluted	$ (0.08)	$ (0.07)	$ (0.14)	$ (0.15)
Weighted average common and equivalent shares outstanding - basic	2,132	1,947	2,132	1,947