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Equity - Incentive Distribution Rights (Details) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Equity [Abstract] |  |  |  |
General partner's ownership interest (as percent) | 2.00% | 2.00% | 2.00% | 2.00%
Minimum quarterly distribution |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.37500 |
Minimum quarterly distribution | Common unitholders |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 98.00% |
Minimum quarterly distribution | General Partner |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 2.00% |
First target distribution | Minimum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.37500 |
First target distribution | Maximum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.43125 |
First target distribution | Common unitholders |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 98.00% |
First target distribution | General Partner |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 2.00% |
Second target distribution | Minimum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.43125 |
Second target distribution | Maximum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.46875 |
Second target distribution | Common unitholders |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 85.00% |
Second target distribution | General Partner |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 15.00% |
Third target distribution | Minimum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.46875 |
Third target distribution | Maximum |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.56250 |
Third target distribution | Common unitholders |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 75.00% |
Third target distribution | General Partner |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 25.00% |
Thereafter |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Target Quarterly Distribution per Unit (in dollars per share) |  |  | $ 0.56250 |
Thereafter | Common unitholders |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 50.00% |
Thereafter | General Partner |  |  |  |
Incentive Distribution Made to Managing Member or General Partner [Line Items] |  |  |  |
Marginal Percentage Interest in Distributions (as percent) |  |  | 50.00% |

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- Definition Total quarterly distribution payment target amount + References No definition available. + Details
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- Definition Percentage split between the limited partners' and general partner's interests in distributions. + References No definition available. + Details
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- References No definition available. + Details
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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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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: 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 + Details
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