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Share-Based Compensation (Restricted Stock Units Expected to Vest) (Details) - Performance Based Restricted Stock Units shares in Thousands | Dec. 31, 2018 shares
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Vesting on January 1, 2019 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expected to Vest | 33
Not Expected to Vest | 51
Total | 84
Vesting on January 1, 2020 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expected to Vest | 55
Not Expected to Vest | 3
Total | 58
Vesting on January 1, 2021 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expected to Vest | 47
Not Expected to Vest | 2
Total | 49

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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(i)-(ii) -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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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest, Outstanding, Number + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Not Expected to Vest, Outstanding, Number + References No definition available. + Details
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