Consolidated Statements of Partners' Capital (Parenthetical) - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Regular distributions paid or accrued	$ 0.50	$ 0.50
Tier 2 [Member]
Distributions paid or accrued of tier 2 and tier 3	0.50	0.50
Tier 3 [Member]
Distributions paid or accrued of tier 2 and tier 3	$ 0.50	$ 0.50

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
-SubTopic 10
-Section S99
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=6926462&loc=SL5163674-159010

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=6926462&loc=SL5163672-159010

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
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