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Equity - Equity Issuances (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Common Stock | Follow-on Offerings |  |
Class of Stock [Line Items] |  |
Number of Shares Sold (in shares) | 1,897,500 | 2,277,297
Weighted-average Offering Price per Share | $ 14.40 | $ 11.73
Gross Proceeds | $ 27,324 | $ 26,713
Net Proceeds | $ 26,094 | $ 25,401
Common Stock | ATM Program |  |
Class of Stock [Line Items] |  |
Number of Shares Sold (in shares) | 3,096,558 | 197,142
Weighted-average Offering Price per Share | $ 14.82 | $ 12.24
Gross Proceeds | $ 45,883 | $ 2,413
Net Proceeds | $ 45,424 | $ 2,377
Preferred Stock | Series B Preferred Stock |  |
Class of Stock [Line Items] |  |
Number of Shares Sold (in shares) | 1,229,531 | 3,626,076
Weighted-average Offering Price per Share | $ 24.52 | $ 24.61
Gross Proceeds | $ 30,148 | $ 89,232
Net Proceeds | $ 27,664 | $ 81,587
Preferred Stock | Series C Preferred Stock |  |
Class of Stock [Line Items] |  |
Number of Shares Sold (in shares) | 1,088,315 |
Weighted-average Offering Price per Share | $ 24.80 |
Gross Proceeds | $ 26,987 |
Net Proceeds | $ 24,759 |
Shares issued pursuant to the DRIP (in shares) | 258 |

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