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Equity - Monthly Distributions Declared and Paid by Company's Board of Directors (Detail) - $ / shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Series A Preferred Stock |  |
Class of Stock [Line Items] |  |
Distributions per Preferred Share (in dollars per share) | $ 0.181510 | $ 1.593750
Series B Preferred Stock |  |
Class of Stock [Line Items] |  |
Distributions per Preferred Share (in dollars per share) | 1.500000 | 1.500000
Series C Preferred Stock |  |
Class of Stock [Line Items] |  |
Distributions per Preferred Share (in dollars per share) | 1.500000 | 1.125000
Series D Term Preferred Stock |  |
Class of Stock [Line Items] |  |
Distributions per Preferred Share (in dollars per share) | 1.184031 | 0
Common Stock |  |
Class of Stock [Line Items] |  |
Distributions per Common Share (in dollars per share) | $ 0.540750 | $ 0.537150

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