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Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Dividends common stock, per share amount | $ 0.36 | $ 0.32
Dividends preferred stock, per share amount | $ 0.65 | $ 0.65
Common stock issuance, shares (in Shares) |  | 1,666,666

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