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Equity - 2019 Equity Issuances (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 50 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2019
Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Number of shares sold (in shares) |  |  | 1,744,150
Weighted-average Offering Price Per Share |  |  | $ 12.82
Gross proceeds |  |  | $ 22,400
Net proceeds |  |  | $ 22,000
Preferred Stock | Series B Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Number of shares sold (in shares) | 831,579 | 2,330,654 |
Weighted-average Offering Price Per Share | $ 24.64 | $ 24.68 |
Gross proceeds | $ 20,487 | $ 57,529 |
Net proceeds | $ 18,711 | $ 52,440 |
ATM Program | Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Number of shares sold (in shares) | 78,008 | 148,559 |
Weighted-average Offering Price Per Share | $ 12.01 | $ 12.32 |
Gross proceeds | $ 937 | $ 1,830 |
Net proceeds | $ 923 | $ 1,802 |

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