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Share-Based Compensation (Summary of Grant Date Fair Value of Awards) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |  |
Options | $ 53 | $ 121 | $ 12,633 | $ 3,628
Restricted stock | 18 | 0 | 3,379 | 4,182
Total | $ 71 | $ 121 | $ 16,012 | $ 7,810

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