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Stockholders' Equity - Preferred Stock (Details) - shares
Jun. 30, 2020
Dec. 31, 2019
Class of Stock    
Number of preferred shares authorized in amendment (in shares) 5,000,000  
Series A Preferred Stock    
Class of Stock    
Number of preferred shares authorized in amendment (in shares) 2,000,000  
Preferred stock issued (in shares)   2,000,000
Preferred stock outstanding (in shares)   2,000,000