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v3.20.2

Shareholders' Equity (Schedule of Dividends) (Details) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Class Of Stock [Line Items] |  |  |  |
Common stock | $ 0.010 | $ 0.050 | $ 0.070 | $ 0.150
Series B Preferred Stock [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Cumulative Redeemable Preferred Stock | $ 0.453 | $ 0.453 | $ 1.359 | $ 1.359
Dividend rate percentage | 7.25% | 7.25% | 7.25% | 7.25%
Series C Preferred Stock [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Cumulative Redeemable Preferred Stock | $ 0.406 | $ 0.406 | $ 1.219 | $ 1.219
Dividend rate percentage | 6.50% | 6.50% | 6.50% | 6.50%

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