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Description Of Business And Significant Accounting Policies (Disaggregation Of Revenue) (Q2) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 563,000	$ 1,390,000	$ 1,526,000	$ 2,562,000	$ 4,911,000	$ 5,871,000
Crude Oil [Member]
Disaggregation of Revenue [Line Items]
Revenue	558,000	1,384,000	1,517,000	2,549,000	4,884,000	5,840,000
Saltwater Disposal Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 5,000	$ 6,000	9,000	$ 13,000	27,000	31,000
Natural Gas Imbalances [Member]
Disaggregation of Revenue [Line Items]
Revenue			$ 0		$ 0	$ 0

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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