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Dividends/Distributions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Dividends [Line Items] |  |  |  |  |  |  |  |
Dividends declared, per share | $ 0.50 | $ 0.50 | $ 1.00 | $ 0.96 | $ 0.96 | $ 0.96 | $ 2.00 | $ 2.88
Distributions paid, preferred stockholders | $ 91 |  |  | $ 91 |  |  | $ 273 | $ 273
Distributions paid, preferred stockholders, per share | $ 15.95 |  |  | $ 15.95 |  |  | $ 47.85 | $ 47.85
Distributions paid | $ 50,416 |  |  | $ 96,390 |  |  | $ 201,499 | $ 288,344
Distributions paid, per share | $ 0.50 |  |  | $ 0.96 |  |  | $ 2.00 | $ 2.88

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