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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Series D Preferred Stock |  |  |
Dividends declared on preferred stock during the year but paid after year-end (in dollars per share) | $ 1.58 | $ 1.58 | $ 0.79
Series E Preferred Stock |  |  |
Dividends declared on preferred stock during the year but paid after year-end (in dollars per share) | $ 1.47 | $ 0.73 |
Series C Preferred Stock |  |  |
Dividends declared on preferred stock during the year but paid after year-end (in dollars per share) |  |  | $ 1.48

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