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Equity - Common Stock and Preferred Stock (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Stockholders' equity |  |  |  |
Common stock, authorized shares |  |  | 62,500,000 |
Preferred stock, authorized shares |  |  | 2,000,000 |
Net proceeds from the offering |  |  | $ 5,309,000 | $ 0
Public offering |  |  |  |
Stockholders' equity |  |  |  |
Number of shares of common stock issued |  |  | 1,092,570 |
Shares Issued, Price Per Share |  |  | $ 5.03 |
ATM |  |  |  |
Stockholders' equity |  |  |  |
Net proceeds from the offering |  |  | $ 5,300,000 |
Common Stock |  |  |  |
Stockholders' equity |  |  |  |
Number of shares of common stock issued | 1,250 | 5,000 |  |
Common Stock | ATM |  |  |  |
Stockholders' equity |  |  |  |
Number of shares of common stock issued |  |  | 1,092,570 |
Shares Issued, Price Per Share |  |  | $ 5.03 |
Aggregate offering price |  |  | $ 15,000,000 |
Gross proceeds from the offering |  |  | $ 5,500,000 |

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