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Acquisitions and Sale of Non-Controlling Interests (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Partnership	Dec. 31, 2018 USD ($) Partnership	Dec. 31, 2017 USD ($) Partnership
Business Combination, Description [Abstract]
Number of partnerships in which interest acquired | Partnership	4	3	2
Sale of non-controlling interest percentage in partnership one	1.00%
Tax effect on sale price | $	$ 196	$ 224	$ 56
Percentage of interest acquired			35.00%
Minimum [Member]
Business Combination, Description [Abstract]
Percentage of interest acquired	1.00%	5.50%
Maximum [Member]
Business Combination, Description [Abstract]
Percentage of interest acquired	55.00%	35.00%

X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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X

- References

No definition available.

+ Details

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X

- Definition

Number of partnership in which interest acquired during the period.

+ References

No definition available.

+ Details

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X

- Definition

Refers to noncontrolling percentage sold by an entity during the period.

+ References

No definition available.

+ Details

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X

- Definition

Refers to amount of tax effected on noncontrolling interest sale price during the period.

+ References

No definition available.

+ Details

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X

- Details

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