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Revenue Recognition - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Total revenue	$ 2,330	$ 6,573
Oil [Member]
Total revenue	2,127	6,149
Natural Gas and Liquids [Member]
Total revenue	203	424
North Dakota [Member]
Total revenue	1,342	2,626
North Dakota [Member] | Oil [Member]
Total revenue	1,240	2,449
North Dakota [Member] | Natural Gas and Liquids [Member]
Total revenue	102	177
West Texas [Member]
Total revenue	957	3,947
West Texas [Member] | Oil [Member]
Total revenue	875	3,700
West Texas [Member] | Natural Gas and Liquids [Member]
Total revenue	82	247
Other [Member]
Total revenue	31
Other [Member] | Oil [Member]
Total revenue	12
Other [Member] | Natural Gas and Liquids [Member]
Total revenue	$ 19

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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