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Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
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Jul. 01, 2020 | Jun. 22, 2020 | Jun. 10, 2020 | Jun. 01, 2020 | May 22, 2020 | May 12, 2020 | May 01, 2020 | Apr. 22, 2020 | Apr. 08, 2020 | Apr. 01, 2020 | Mar. 23, 2020 | Mar. 16, 2020 | Mar. 14, 2020 | Mar. 10, 2020 | Mar. 02, 2020 | Feb. 24, 2020 | Feb. 14, 2020 | Feb. 03, 2020 | Jan. 24, 2020 | Jan. 13, 2020 | Jun. 30, 2020 | May 31, 2020 | Apr. 30, 2020 | Mar. 31, 2020 | Feb. 29, 2020 | Jan. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,000,000 |  |  |  |  |  | 50,000,000 |  |  |  | 50,000,000 |
Preferred Stock, Par or Stated Value Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  | $ 0.01 |  |  |  | $ 0.01 |
Stock issuance, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 107,988 | $ 18,052 | $ 58,887 |  |
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8 | $ 9 | $ 28 | $ 212 |  |
Preferred Stock, Shares Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,248,330 |  |  |  |  |  | 7,248,330 |  |  |  | 7,248,330 | 6,788,330
Redemption Premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,914 |  |  |  |  |
Preferred Stock, Shares Issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,248,330 |  |  |  |  |  | 7,248,330 |  |  |  | 7,248,330 | 6,788,330
Dividends Payable, Date Declared, Month and Year |  |  | Jun. 10, 2020 |  |  | May 12, 2020 |  |  | Apr. 08, 2020 |  |  |  |  | Mar. 10, 2020 |  |  | Feb. 14, 2020 |  |  | Jan. 13, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.13 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 |  |  |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 2,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Redemption Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  | 7.625% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  |  |  |  |  |  |  |  |  | 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Redemption Price Per Share |  |  |  |  |  |  |  |  |  |  |  | $ 25.32 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,788,330 |  |  |  |  |  | 2,788,330 |  |  |  | 2,788,330 |
Preferred Stock, Liquidation Preference Per Share |  |  |  |  |  |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  | $ 25.00 |  |  |  | $ 25.00 |
Preferred Stock, Dividend Payment Terms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Series B Preferred Stock pays a cumulative cash dividend equivalent to 7.625% of the $25.00 liquidation preference per share each year. |
Preferred Stock, Dividends Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.4765625 |  |  |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,600,000 |  |  |  |  |  | 6,600,000 |  |  |  | 6,600,000 |
Stock issuance, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,460,000 |  |  |  |  |
Stock issuance, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 107,988 |  |  |  |  |
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,512 |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.90% |
Preferred Stock, Liquidation Preference Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  | $ 25.00 |  |  |  | $ 25.00 |
Preferred Stock, Dividend Payment Terms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Series C Preferred stock pays a cumulative cash dividend equivalent to 6.900% of the $25.00 liquidation preference per share each year until April 15, 2025 upon which date and thereafter, the Company will pay cumulative cash dividends at a percentage of the $25.00 liquidation value per share equal to an annual floating rate of three-month LIBOR plus a spread of 5.461%. |
Preferred Stock, Dividends Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.43125 |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Date of Record |  | Jun. 22, 2020 |  |  | May 22, 2020 |  |  | Apr. 22, 2020 |  |  | Mar. 23, 2020 |  |  |  |  | Feb. 24, 2020 |  |  | Jan. 24, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Date to be Paid | Jul. 01, 2020 |  |  | Jun. 01, 2020 |  |  | May 01, 2020 |  |  | Apr. 01, 2020 |  |  |  |  | Mar. 02, 2020 |  |  | Feb. 03, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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