Consolidated Statements of Partners' Capital (Parenthetical) - $ / shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Regular distributions paid or accrued	$ 0.50	$ 0.305
Tier 2 [Member]
Distributions paid or accrued of tier 2 and tier 3	0.50	0.305
Tier 3 [Member]
Distributions paid or accrued of tier 2 and tier 3	$ 0.50	$ 0.305

Per-share or per-unit amount of incentive dividend declared and paid to managing member or general partner.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 260
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-Section 45
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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