Per unit of ownership amount of cash distributions declared to unit-holder of a limited liability company (LLC).

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=27012166&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Name:	us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionsDeclaredPerUnit
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

SUBSEQUENT EVENTS (Details) - USD ($)			6 Months Ended
SUBSEQUENT EVENTS (Details) - USD ($)	Aug. 05, 2020	Jul. 24, 2020	Jun. 30, 2020	Jun. 30, 2019
Subsequent events
Distributions on Series A redeemable preferred units			$ 2,887,503	$ 3,850,000
Distributions to Class B unitholders			$ 47,948	$ 47,628
Subsequent Event
Subsequent events
Distributions on Series A redeemable preferred units	$ 1,000,000.0
Distributions to Class B unitholders	$ 23,141
Cash distributions declared (in dollars per unit)		$ 0.13
Subsequent Event \| Class B Common Units
Subsequent events
Cash distributions (as a percent)	2.00%