Note 10 - Partners' Capital (Deficit) and Distributions (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
Dec. 31, 2021	Dec. 31, 2021
Common Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Declaration Date	Jan. 25, 2022
Distribution Made to Limited Partner, Distributions Declared, Per Unit (in dollars per share)	$ 0.0425
Distribution Made to Limited Partner, Distribution Date	Feb. 14, 2022
Distribution Made to Limited Partner, Date of Record	Feb. 07, 2022
Distribution Made to Limited Partner, Cash Distributions Declared	$ 1.9
Preferred Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Declaration Date	Jan. 25, 2022
Distribution Made to Limited Partner, Distributions Declared, Per Unit (in dollars per share)	$ 0.17875
Distribution Made to Limited Partner, Distribution Date	Feb. 14, 2022
Distribution Made to Limited Partner, Date of Record	Feb. 07, 2022
Distribution Made to Limited Partner, Cash Distributions Declared	$ 6.2
Holders of Phantom and Restricted Units [Member] \| Common Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Cash Distributions Declared	0.1
Preferred Partner [Member] \| First Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		98.40%
Preferred Partner [Member] \| Second Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		98.40%
Preferred Partner [Member] \| Quarterly Distributions [Member]
Guaranteed Distribution Per Preferred Unit Per Quarter (in dollars per share)		$ 0.17875
Preferred Partner [Member] \| Preferred Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Cash Distributions Declared	6.2
General Partner [Member] \| First Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		1.60%
General Partner [Member] \| Second Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		1.60%
General Partner [Member] \| Third Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		1.60%
General Partner [Member] \| First Tier Incentive Distribution Rights Percentage Increase [Member]
Incentive Distribution Rights, Percentage Increase		13.00%
General Partner [Member] \| Second Tier Incentive Distribution Rights Percentage Increase [Member]
Incentive Distribution Rights, Percentage Increase		23.00%
General Partner [Member] \| Third Tier Incentive Distribution Rights Percentage Increase [Member]
Incentive Distribution Rights, Percentage Increase		48.00%
General Partner [Member] \| First Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		1.60%
General Partner [Member] \| Second Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		14.60%
General Partner [Member] \| Third Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		24.60%
General Partner [Member] \| Fourth Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		49.60%
General Partner [Member] \| Common Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Cash Distributions Declared	0.1
General Partner [Member] \| Preferred Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Cash Distributions Declared	0.1
Limited Partner [Member]
Minimum Distribution, Per Common Unit Per Quarter (in dollars per share)		$ 0.11
Limited Partner [Member] \| Third Tier Cash Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		98.40%
Limited Partner [Member] \| First Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		98.40%
Limited Partner [Member] \| Second Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		85.40%
Limited Partner [Member] \| Third Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		75.40%
Limited Partner [Member] \| Fourth Tier Target Distribution [Member]
Partners' Capital Account, Distributions, Allocation Percentage		50.40%
Limited and General Partners [Member] \| First Tier Target Distribution [Member]
Target Quarterly Distribution (in dollars per share)		$ 0.1265
Limited and General Partners [Member] \| Second Tier Target Distribution [Member]
Target Quarterly Distribution (in dollars per share)		0.1375
Limited and General Partners [Member] \| Third Tier Target Distribution [Member]
Target Quarterly Distribution (in dollars per share)		$ 0.1825
Common Unitholder [Member] \| Common Unit, Cash Distribution [Member]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 1.8

Represents guaranteed distribution per preferred unit per quarter.

No definition available.

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- Definition

The increasing percentage of quarterly distribution pursuant to the incentive distribution rights.

+ References

No definition available.

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- Definition

The minimum quarterly distribution.

+ References

No definition available.

+ Details

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- Definition

The allocation percentage of distribution to the uniholders.

+ References

No definition available.

+ Details

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- Definition

Represents the target quarterly distribution.

+ References

No definition available.

+ Details

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- Definition

Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

+ Details

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- Definition

Date of record for distribution of cash or unit to limited partner of limited partnership (LP), in YYYY-MM-DD format.

+ References

+ Details

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- Definition

Date of declaration for distribution of cash or unit to limited partner of limited partnership (LP), in YYYY-MM-DD format.

+ References

+ Details

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- Definition

Date of distribution for distribution of cash or unit to limited partner of limited partnership (LP), in YYYY-MM-DD format.

+ References

+ Details

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- Definition

Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

+ References

+ Details

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