L. SUPPLEMENTARY FINANCIAL INFORMATION ON OIL AND NATURAL GAS EXPLORATION, DEVELOPMENT (Details - Future cash flows) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Extractive Industries [Abstract]
Future oil and gas cash inflows	$ 2,526	$ 8,292
Future oil & gas operating expenses	(611)	(1,478)
Future development costs	0	(1,400)
Future tax expense	(159)	(590)
Future net cash flows	1,756	4,824
10% discount to reflect timing of cash flows	(806)	(1,853)
Standardized measure of future cash flows	$ 950	$ 2,971

No definition available.

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- Definition

Amount of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.

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- Definition

Amount of estimated future accumulated cash outflow for costs to be incurred in developing proved oil and gas reserves.

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- Definition

Amount of estimated future accumulated cash outflow for income tax, based on the future income less future expense derived from production and sale of proved oil and gas reserves.

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Amount, after future accumulated cash outflow for development and production costs and future income tax, of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447

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Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves.

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- Definition

Amount of discount on future accumulated cash inflow, after deducting future accumulated cash outflow for development and production costs and future income tax, from sale of proved oil and gas reserves, using a discount rate of ten percent a year.

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- Definition

Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 31
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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