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Equity - Distributions Earned (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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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 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. + References No definition available. + Details
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