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Equity - Distributions Earned (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Distributions Earned by Limited or General Partners [Line Items]
General partner's IDRs	$ 7,016	$ 5,337
Total general partner's distributions	7,424	5,710
Common limited partners' distributions	20,014	18,287
Total cash distributions	$ 27,438	$ 23,997
Cash distributions per limited partner unit (in dollars per share)	$ 0.820	$ 0.750
General Partner
Distributions Earned by Limited or General Partners [Line Items]
General partner's distributions	$ 408	$ 373
General partner's IDRs	$ 7,016	$ 5,337

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- Definition

The amount of cash distributions declared to partners by a limited partnership.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The total amount of distributions to the general partner during the period, including IDRs.

+ References

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- Definition

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

+ References

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-Publisher FASB
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-SubTopic 10
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The total amount of distributions to the general partner during the period.

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- Definition

Amount of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner.

+ References

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-Publisher FASB
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The total amount of distributions to limited partners.

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