v3.20.4

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 7 Months Ended | 12 Months Ended | 31 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 25, 2020 | Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020 | Jan. 24, 2020 | Feb. 28, 2019 | Jun. 13, 2018 | Dec. 31, 2017
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued |  |  | 4,600,000 | 4,600,000 |  | 4,600,000 |  |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock |  |  | $ 0 | $ 111,378 |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 6.75% | 6.75% |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  | 4,600,000 | 4,600,000 |  | 4,600,000 |  |  |  |
Preferred Stock, Shares Authorized |  |  | 100,000,000 | 100,000,000 |  | 100,000,000 |  |  |  |
Preferred Stock, Par or Stated Value Per Share |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  | $ 25.00 |  |  | $ 25.00 |  |  |  |
Preferred Stock, Amount of Preferred Dividends in Arrears |  |  | $ 1,300 | $ 1,500 |  |  |  |  |  |
Preferred Stock Dividend Rate Variable Rate Spread |  |  | 5.196% |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 100,000,000 | 100,000,000 | 100,000,000 | 100,000,000 | 100,000,000 |  |  |  |
Common shares |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 |  | $ 0.001 |  |
Common stock, shares outstanding |  | 29,796,601 | 43,781,684 | 38,647,943 | 29,796,601 | 43,781,684 |  |  |  | 31,335,938
Dividends declared (in usd per share) |  |  | $ 1.26 | $ 1.81 | $ 1.64 |  |  |  |  |
Dividends paid |  |  | $ (65,026) | $ (54,312) | $ (50,736) |  |  |  |  |
Common shares issued and outstanding upon conversion of all convertible securities (in shares) |  | 30,529,972 | 44,442,631 | 39,371,584 | 30,529,972 | 44,442,631 |  |  |  |
Number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  | 1,550,000 |
Shares repurchased (in shares) |  | 361,090 | 290,050 | 50,825 | 1,547,148 | 701,965 |  |  |  |
Average price per share (USD per share) |  | $ 15.34 | $ 10.54 | $ 15.39 |  | $ 13.36 |  |  |  |
Total cost |  | $ (5,500) | $ (3,056) | $ (782) | $ (23,131) | $ (9,400) |  |  |  |
Stock Issued During Period, Shares, New Issues | 5,290,000 |  | 5,290,000 | 8,855,000 |  |  |  |  |  |
Proceeds from issuance of shares, net |  |  |  |  |  |  | $ 95,300 |  |  |
Stock issued during period, shares, conversion of units |  |  |  |  | 3,334 |  |  |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 690,000 |  |  |  |  |  |  |  |  |
OP LTIP Unit [Member] |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, conversion of units |  |  | 0 | 13,092 |  |  |  |  |  |
Operating Partnership Units [Member] |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, conversion of units |  |  | 133,154 | 34,075 |  |  |  |  |  |

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