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Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Dividends [Abstract] |  |  |
Operating loss carryforwards |  | $ 529,600 |
Common stock dividends declared | $ 35,076 | $ 32,815 | $ 25,324
Common stock dividends declared per share (in dollars per share) | $ 0.485 | $ 0.43 |
Capital gains distribution | 100.00% | 100.00% |
Unrecaptured Section 1250 gain percentage | 18.31% |  |
Common Stock |  |  |
Dividends [Abstract] |  |  |
Capital gains distribution |  | 100.00% |
Unrecaptured Section 1250 gain percentage |  | 18.31% |
7.65% Series G Cumulative Redeemable Preferred Stock, $0.001 par value |  |  |
Dividends [Abstract] |  |  |
Common stock dividends declared | $ 6,100 | $ 6,100 |
7.50% Series I Cumulative Redeemable Preferred Stock, $0.001 par value |  |  |
Dividends [Abstract] |  |  |
Common stock dividends declared | 9,400 | 9,400 |
8.00% Series D Cumulative Redeemable Preferred Stock, $0.001 par value |  |  |
Dividends [Abstract] |  |  |
Common stock dividends declared | $ 8,000 | $ 8,000 |

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