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Subsequent Events (Details) - LTIP - Phantom units |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 16, 2019 shares | Apr. 02, 2018 | Jan. 31, 2019 director | Dec. 31, 2018 shares
Subsequent Events |  |  |  |
Units granted under LTIP |  |  |  | 1,136,447
Percentage of awards vesting |  | 100.00% |  |
Subsequent Event |  |  |  |
Subsequent Events |  |  |  |
Units granted under LTIP | 15,150 |  |  |
Number of independent directors | director |  |  | 2 |
Subsequent Event | Vesting on December 5, 2021 |  |  |  |
Subsequent Events |  |  |  |
Percentage of awards vesting | 60.00% |  |  |
Subsequent Event | Vesting on December 5, 2023 |  |  |  |
Subsequent Events |  |  |  |
Percentage of awards vesting | 40.00% |  |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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