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Share-based Compensation (Restricted Stock Awards And Restricted Stock Units Activity Narrative) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($) shares
Restricted Stock Awards [Member] |
Schedule of Restricted Stock Award and Restricted Stock Unit Activity [Line Items] |
Unrecognized share-based compensation expense related to unvested awards | $ | $ 0.2
Amortized over a weighted average period | 11 months 5 days
Restricted stock vested in period (shares) | shares | 39,000
Time-based Restricted Stock Units [Member] |
Schedule of Restricted Stock Award and Restricted Stock Unit Activity [Line Items] |
Unrecognized share-based compensation expense related to unvested awards | $ | $ 10.7
Amortized over a weighted average period | 1 year 8 months 26 days
Restricted stock vested in period (shares) | shares | 800,000
Performance-based Restricted Stock Units [Member] |
Schedule of Restricted Stock Award and Restricted Stock Unit Activity [Line Items] |
Unrecognized share-based compensation expense related to unvested awards | $ | $ 9.2
Amortized over a weighted average period | 2 years 8 months 5 days
Restricted stock vested in period (shares) | shares | 200,000

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. + 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 (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2) -URI http://asc.fasb.org/extlink&oid=96867065&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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