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Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Details) - Subsequent Event - $ / shares | Oct. 07, 2020 | Sep. 30, 2020 | Sep. 23, 2020 | Sep. 04, 2020 | Aug. 31, 2020 | Aug. 26, 2020 | Aug. 24, 2020 | Aug. 05, 2020 | Jul. 31, 2020 | Jul. 29, 2020 | Jul. 24, 2020 | Jul. 14, 2020
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Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  |  | $ 0.3984375
Series A Preferred Stock | Period One |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  |  |  |  |  | Jul. 24, 2020 |
Payment Date |  |  |  |  |  |  |  |  | Jul. 31, 2020 |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  | $ 0.1328125 |
Series A Preferred Stock | Period Two | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  | Aug. 24, 2020 |  |  |  |  |
Payment Date |  |  |  |  | Aug. 31, 2020 |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  | $ 0.1328125 |  |  |  |  |
Series A Preferred Stock | Period Three | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  | Sep. 23, 2020 |  |  |  |  |  |  |  |  |
Payment Date |  | Sep. 30, 2020 |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  | $ 0.1328125 |  |  |  |  |  |  |  |  |
Series B Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  |  | 0.375
Series B Preferred Stock | Period One |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  |  |  |  | Jul. 29, 2020 |  |
Payment Date |  |  |  |  |  |  |  | Aug. 05, 2020 |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  | $ 0.125 |  |
Series B Preferred Stock | Period Two | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  | Aug. 26, 2020 |  |  |  |  |  |
Payment Date |  |  |  | Sep. 04, 2020 |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  | $ 0.125 |  |  |  |  |  |
Series B Preferred Stock | Period Three | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  | Sep. 30, 2020 |  |  |  |  |  |  |  |  |  |
Payment Date | Oct. 07, 2020 |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  | $ 0.125 |  |  |  |  |  |  |  |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  |  | 0.375
Series C Preferred Stock | Period One |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  |  |  |  | Jul. 29, 2020 |  |
Payment Date |  |  |  |  |  |  |  | Aug. 05, 2020 |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  | $ 0.125 |  |
Series C Preferred Stock | Period Two | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  | Aug. 26, 2020 |  |  |  |  |  |
Payment Date |  |  |  | Sep. 04, 2020 |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  | $ 0.125 |  |  |  |  |  |
Series C Preferred Stock | Period Three | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  | Sep. 30, 2020 |  |  |  |  |  |  |  |  |  |
Payment Date | Oct. 07, 2020 |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  | $ 0.125 |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  |  | $ 0.1344
Common Stock | Period One |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  |  |  |  |  | Jul. 24, 2020 |
Payment Date |  |  |  |  |  |  |  |  | Jul. 31, 2020 |  |  |
Distribution per Share |  |  |  |  |  |  |  |  |  |  | $ 0.0448 |
Common Stock | Period Two | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  |  |  |  |  | Aug. 24, 2020 |  |  |  |  |
Payment Date |  |  |  |  | Aug. 31, 2020 |  |  |  |  |  |  |
Distribution per Share |  |  |  |  |  |  | $ 0.0448 |  |  |  |  |
Common Stock | Period Three | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Record Date |  |  | Sep. 23, 2020 |  |  |  |  |  |  |  |  |
Payment Date |  | Sep. 30, 2020 |  |  |  |  |  |  |  |  |  |
Distribution per Share |  |  | $ 0.0448 |  |  |  |  |  |  |  |  |

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