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Stockholders' Equity Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity Attributable to Parent [Abstract] |
QuarterlydividendsdeclaredTableTextBlock [Table Text Block] | Dividends The Board declared quarterly dividends as follows:
(amounts per share) | 2018 |  |  | 2017 |  |
First quarter | $ | 0.20 |  |  | $ | 0.125 |  |
Second quarter | 0.20 |  |  | 0.150 |  |
Third quarter | 0.20 |  |  | 0.150 |  |
Fourth quarter | 0.20 |  |  | 1.150 |  | (1)
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(1) | Includes a $1.00 per share special dividend.

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- Definition Tabular disclosure of all or some of the information related to dividends declared and paid as of the financial reporting date. + References No definition available. + Details
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