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Shareholders' Equity (Narrative) (Details) - $ / shares |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 16, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Class Of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 12,500,000 |
Series B [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 1,450,000 | 1,450,000
Series C [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Preferred stock, shares authorized |  | 6,450,000 | 6,450,000
Subsequent Event [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Dividends payable, date declared | Oct. 16, 2020 |  |
Common stock, dividends declared | $ 0.01 |  |
Dividends payable, date to be paid | Nov. 20, 2020 |  |
Dividends payable, date of record | Nov. 10, 2020 |  |
Subsequent Event [Member] | Series B [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Preferred stock dividends declared | $ 0.453125 |  |
Subsequent Event [Member] | Series C [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Preferred stock dividends declared | $ 0.406250 |  |
Common Stock [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Stockholders' equity, reverse stock split |  | Each 6.6 shares of the Company's issued and outstanding common stock will be combined into one share of the Company's common stock. |

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