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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