Summary of Significant Accounting Policies - Equity-Based Compensation (Details) - 2013 Plan [Member] - Restricted Stock Units [Member] |
12 Months Ended |
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Dec. 31, 2018 | |
| Minimum [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Performance target rate | 0.00% |
| Maximum [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Performance target rate | 200.00% |
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- Definition Share-Based Compensation Arrangements By Share-Based Payment Award, Performance Target Rate No definition available.
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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. No definition available.
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