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Stockholders' Equity (DRIP) (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Feb. 28, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) | 375,000,000 |  |  | 375,000,000
Net proceeds | $ 3,325 | $ 65,440 |  |
DRIP |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) |  |  | 6,000,000 |
Shares of common stock (in shares) | 46,666 | 121,988 |  |
Net proceeds | $ 2,012 | $ 4,458 |  |

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