Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income (loss)	$ (2,352)	$ (484)	$ (3,246)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation, depletion and amortization	84	247	320
Write-off of assets from discontinued operation			25
Impairment of oil & gas properties	2,285		2,626
Changes in operating assets and liabilities
Other current and non-current assets	53	(22)	223
Accounts payable and other liabilities	299	(384)	178
Net cash provided by (used) in operating activities	369	(637)	202
Cash flows from investing activities
Dry hole expenses	(596)
Investment in undeveloped land			(10)
Fixed asset additions	(68)
Issuance of note receivable - related party		(4,000)
Collections (issuance) of note receivable		40	24
Net cash provided by (used) in investing activities	(664)	(3,960)	14
Cash flows from financing activities
Payment on notes payable	(44)	(70)	(73)
Proceeds from the sale of common stock		4,609	163
Net cash provided by (used in) financing activities	(44)	4,539	90
Net increase (decrease) in cash and cash equivalents	(339)	(58)	306
Cash and cash equivalents at beginning of year	361	419	113
Cash and cash equivalents at end of year	22	361	419
Supplemental disclosures of cash flow information
Cash paid for interest on notes payable:	15	18	24
Cash paid for principal on notes payable:	$ 44	$ 70	$ 73