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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2018
Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Transactions Of Share Based Compensation Other Than Stock Options |
(shares) | Restricted Stock Units |  | Weighted Average Award Date Fair Value Per Unit ($)
Non-vested at December 31, 2017 | 698,126 |  |  | 15.09 |
Granted | 158,689 |  |  | 21.94 |
Forfeited | (6,890 | ) |  | 21.42 |
Vested | (671,247 | ) |  | 14.91 |
Non-vested at December 31, 2018 | 178,678 |  |  | 21.82 |
Performance Shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Transactions Of Share Based Compensation Other Than Stock Options |
(shares) | Performance Awards |  | Weighted Average Grant Date Fair Value Per Unit ($)(1)
Non-vested at December 31, 2017 | 1,184,773 |  |  | 19.52 |
Granted | 514,338 |  |  | 22.51 |
Forfeited | (64,393 | ) |  | 26.79 |
Vested | — |  |  | — |
Non-vested at December 31, 2018 | 1,634,718 |  |  | 20.45 |

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- Definition Tabular disclosure of the changes in other outstanding share-based compensation awards other than stock options or nonvested 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + 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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