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Note 2 - Acquisition for Units (Details Textual) - USD ($) $ in Millions	Mar. 29, 2019	Dec. 31, 2019	Aug. 21, 2019
Limited Partners' Capital Account, Units Authorized (in shares)			20,000,000
HHC [Member]
Business Acquisition, Percentage of Net Profits Interest Acquired	96.97%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total		$ 42.9
Impairment of Oil and Gas Properties	$ 4.3
HHC [Member] | Partnership Interest [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	2,400,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 43.8

X

- Definition

Percentage of net profits interests acquired at the acquisition date in the business combination.

+ References

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Number of shares of equity interests issued or issuable to acquire entity.

+ References

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

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