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Note 7 - Leases (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Lease, Cost [Table Text Block]

		In Thousands
		2021				2020
Operating lease expense		$	262			$	262

Lessee, Operating Lease, Cash Flow [Table Text Block]

		In Thousands
		2021				2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases		$	338			$	332

Lessee, Operating Lease, Balance Sheet [Table Text Block]

		2021				2020
Weighted-Average Remaining Lease Term (months)
Operating lease			86				98
Weighted-Average Discount Rate
Operating lease			5	%			5	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

		In Thousands
		2021
2022		$	344
2023			350
2024			356
2025			362
2026			368
Thereafter			817
Total lease payments			2,597
Less amount representing interest			(712	)
Total lease obligation		$	1,885

X

- Definition

The tabular disclosure for balance sheet information of operating leases of the lessee.

+ References

No definition available.

+ Details

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Namespace Prefix:	dmlp_
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Balance Type:	na
Period Type:	duration

X

- Definition

The tabular disclosure of cash flow information for operating leases of the lessee.

+ References

No definition available.

+ Details

Name:	dmlp_LesseeOperatingLeaseCashFlowTableTextBlock
Namespace Prefix:	dmlp_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

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X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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- References

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration