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Stockholders' Equity and Mezzanine Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Dividends Declared | We paid the following distributions per share for the years ended December 31, 2017, 2016, and 2015:
|  | For the year ended December 31,
|  | 2017 |  | 2016 |  | 2015
Common Stock |  | $ | 1.500 |  |  | $ | 1.500 |  |  | $ | 1.500 |
Senior Common Stock |  | 1.0500 |  |  | 1.0500 |  |  | 1.0500 |
Series A Preferred Stock |  | 1.9374996 |  |  | 1.9374996 |  |  | 1.9374996 |
Series B Preferred Stock |  | 1.8750 |  |  | 1.8750 |  |  | 1.8750 |
Series C Preferred Stock |  | — |  |  | 1.1330 |  | (1) | 1.7813 |
Series D Preferred Stock |  | 1.7500 |  |  | 1.0538 |  |  | — |
(1) | We fully redeemed our Series C Preferred Stock on August 19, 2016, and paid all outstanding shareholders a prorated dividend for the month of August.
Summary of Changes in Stockholders' Equity | The characterization of distributions during each of the last three years is reflected in the table below:
|  | Ordinary Income |  | Return of Capital |  | Long-Term Capital Gains
Common Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | 18.80114 | % |  | 79.50018 | % |  | 1.69868 | %
For the year ended December 31, 2016 |  | 28.81758 | % |  | 71.18242 | % |  | — | %
For the year ended December 31, 2017 |  | 39.63189 | % |  | 60.36811 | % |  | — | %
Senior Common Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | 91.71368 | % |  | — | % |  | 8.28632 | %
For the year ended December 31, 2016 |  | 100.00000 | % |  | — | % |  | — | %
For the year ended December 31, 2017 |  | 100.00000 | % |  | — | % |  | — | %
Series A Preferred Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | 91.71368 | % |  | — | % |  | 8.28632 | %
For the year ended December 31, 2016 |  | 100.00000 | % |  | — | % |  | — | %
For the year ended December 31, 2017 |  | 100.00000 | % |  | — | % |  | — | %
Series B Preferred Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | 91.71368 | % |  | — | % |  | 8.28632 | %
For the year ended December 31, 2016 |  | 100.00000 | % |  | — | % |  | — | %
For the year ended December 31, 2017 |  | 100.00000 | % |  | — | % |  | — | %
Series C Preferred Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | 91.71368 | % |  | — | % |  | 8.28632 | %
For the year ended December 31, 2016 |  | 100.00000 | % |  | — | % |  | — | %
For the year ended December 31, 2017 |  | — | % |  | — | % |  | — | %
Series D Preferred Stock |  |  |  |  |  |
For the year ended December 31, 2015 |  | — | % |  | — | % |  | — | %
For the year ended December 31, 2016 |  | 100.00000 | % |  | — | % |  | — | %
For the year ended December 31, 2017 |  | 100.00000 | % |  | — | % |  | — | %

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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