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Stockholders' Equity - Dividends Declared (Details) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared on common stock (in dollars per share) | $ 0.35 | $ 0.35 | $ 0.35 | $ 0.40 | $ 0.70 | $ 0.75
Dividends declared (in dollars per share) | 0.50 | $ 0.50 | 0.50 | $ 0.50 |  |
Common Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared on common stock (in dollars per share) | 0.35 |  | 0.35 |  | 0.70 | 0.75
Series B Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.50 |  | $ 0.50 |  | $ 1.00 | $ 1.00

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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=120397183&loc=d3e187085-122770 + Details
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