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Stockholders' Equity - Dividends Declared (Details) - $ / shares | 2 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 10, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared (in dollars per share) |  | $ 0.46 |  | $ 0.46 | $ 0.92 | $ 0.92
Common stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared (in dollars per share) |  | 0.46 | $ 0.46 |  |  |
Series B Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared (in dollars per share) |  | 0.50 | 0.50 |  |  |
Series C Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.2223 | $ 0.2223 | $ 0.50 |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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