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Equity-Based Compensation (Equity Based Awards - Settled in Stock) (Details) - Performance stock units - shares | 1 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2017 | Feb. 28, 2017 | Sep. 30, 2017 | Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Units awarded (in shares) |  |  | 108,748 | 0
Performance period |  |  | 1 year |
2015 Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Units awarded that will convert to shares (in shares) | 5,266 | 78,482 |  |
Units awarded (in shares) | 5,000 | 20,000 |  |
Performance period |  | 3 years |  |

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Expected to Convert + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -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=96867065&loc=d3e5070-113901 + Details
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