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v3.21.2

Other Equity Matters (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Treasury stock, value |  | $ 456,218 |  |  |  | $ 456,218 |  | $ 436,822
Preferred stock, redemption price per share (in dollars per share) |  | $ 25.00 |  |  |  | $ 25.00 |  |
Cash dividends paid per share |  | $ 0.57 | $ 0.52 |  |  | $ 1.71 | $ 1.56 |
Common Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Aggregate Payment |  | $ 38,200 | $ 35,500 |  |  | $ 114,500 | $ 108,400 |
Preferred Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Aggregate Payment |  | 11,300 | $ 10,500 |  |  | 32,300 | $ 30,400 |
Cumulative unpaid preferred dividends |  | $ 2,200 |  |  |  | $ 2,200 |  |
8.50% Series A Cumulative Redeemable Perpetual Preference Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Per Share Payment (in dollars per share) |  | $ 0.53 | $ 0.53 |  |  | $ 1.59 | $ 1.59 |
Aggregate Payment |  | $ 1,800 | $ 1,800 |  |  | $ 5,400 | $ 5,400 |
8.00% Series B Cumulative Redeemable Perpetual Preference Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Per Share Payment (in dollars per share) |  | $ 0.50 | $ 0.50 |  |  | $ 1.50 | $ 1.50 |
Aggregate Payment |  | $ 2,900 | $ 2,900 |  |  | $ 8,700 | $ 8,700 |
7.375% Series C Cumulative Redeemable Perpetual Preference Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Per Share Payment (in dollars per share) |  | $ 0.46 | $ 0.46 |  |  | $ 1.38 | $ 1.38 |
Aggregate Payment |  | $ 3,200 | $ 3,200 |  |  | $ 9,600 | $ 9,600 |
6.875% Series D Cumulative Redeemable Perpetual Preference Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Per Share Payment (in dollars per share) |  | $ 0.43 | $ 0.43 |  |  | $ 1.29 | $ 1.10 |
Aggregate Payment |  | $ 2,600 | $ 2,600 |  |  | $ 7,800 | $ 6,700 |
5.75% Series E Cumulative Redeemable Perpetual Preference Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Proceeds from issuance of equity | $ 169,500 |  |  |  |  |  |  |
Underwriting discount | $ 5,500 |  |  |  |  |  |  |
Per Share Payment (in dollars per share) |  | $ 0.11 | $ 0 |  |  | $ 0.11 | $ 0 |
Aggregate Payment |  | $ 800 | $ 0 |  |  | $ 800 | $ 0 |
Treasury Shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Treasury shares acquired, shares |  | 378,765 | 356,708 | 2,050,924 | 1,365,620 |  |  |
Share price (in dollars per share) |  | $ 51.19 |  |  |  | $ 51.19 |  |
Treasury stock, value |  | $ 19,400 |  |  |  | $ 19,400 |  |

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