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Stockholders' Equity - Summary of Stock Option Activity (Details) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Stockholders Equity Note [Abstract]    
Number of Shares, Outstanding 1,640  
Number of Shares, Outstanding 1,640 1,640
Number of Shares, Exercisable 1,640  
Weighted Average Exercise Price, Outstanding $ 196.70  
Weighted Average Exercise Price, Outstanding 196.70 $ 196.70
Weighted Average Exercise Price, Exercisable $ 196.70  
Weighted Average Remaining Contractual Term (Years), Outstanding 8 years 7 months 6 days 9 years 1 month 6 days
Weighted Average Remaining Contractual Term (Years), Exercisable 8 years 7 months 6 days