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Equity - Equity Issuances (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Preferred Stock | Series B Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares sold (in shares) |  | 751,159 | 1,229,531 | 1,499,075
Weighted-average offering price per share |  | $ 24.71 | $ 24.52 | $ 24.71
Gross proceeds |  | $ 18,560 | $ 30,148 | $ 37,042
Net proceeds |  | $ 16,901 | $ 27,664 | $ 33,729
Preferred Stock | Series C Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares sold (in shares) |  |  | 130,702 |
Weighted-average offering price per share |  |  | $ 24.94 |
Gross proceeds |  |  | $ 3,260 |
Net proceeds |  |  | $ 2,973 |
ATM Program | Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares sold (in shares) | 44,129 | 70,551 | 453,929 | 70,551
Weighted-average offering price per share | $ 16.19 | $ 12.65 | $ 13.56 | $ 12.65
Gross proceeds | $ 714 | $ 893 | $ 6,155 | $ 893
Net proceeds | $ 707 | $ 879 | $ 6,094 | $ 879

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