Equity - Monthly Distributions Declared and Paid by Company's Board of Directors (Details) - USD ($) $ / shares in Units, $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2020  | 
Sep. 30, 2019  | 
Sep. 30, 2020  | 
Sep. 30, 2019  | 
Apr. 14, 2020  | 
Apr. 09, 2019  | 
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| Series A Preferred Stock | ||||||
| Class of Stock [Line Items] | ||||||
| Distributions per Preferred Share (in dollars per share) | $ 0.3984375 | $ 0.3984375 | $ 1.1953125 | $ 1.1953125 | ||
| Series B Preferred Stock | ||||||
| Class of Stock [Line Items] | ||||||
| Distributions per Preferred Share (in dollars per share) | 0.375 | 0.375 | 1.125 | 1.125 | ||
| Dividends payable | $ 797 | |||||
| Series C Preferred Stock | ||||||
| Class of Stock [Line Items] | ||||||
| Distributions per Preferred Share (in dollars per share) | 0.375 | 0 | 0.750 | 0 | ||
| Dividends payable | $ 433 | |||||
| Common Stock | ||||||
| Class of Stock [Line Items] | ||||||
| Distributions per Common Share (in dollars per share) | $ 0.13440 | $ 0.13365 | $ 0.40245 | $ 0.40050 | ||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Aggregate dividends paid during the period for each share of preferred stock outstanding. No definition available. 
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