Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Outstanding Options (Details)

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Stock-Based Compensation - Schedule of Outstanding Options (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Number of Shares    
Beginning balance (in shares) 18,248  
Stock options canceled (in shares) 3,750  
Ending balance (in shares) 14,498 18,248
Stock options exercisable (in shares) 14,498  
Weighted Average Exercise Price    
Beginning balance (in usd per share) $ 1.74  
Stock options canceled (in usd per share) 3.7  
Ending balance (in usd per share) 1.23 $ 1.74
Stock options exercisable (in usd per share) $ 1.23  
Stock options outstanding, weighted average remaining contractual term 1 year 7 months 20 days 1 year 9 months 18 days
Stock options exercisable, weighted average remaining contractual term 1 year 7 months 20 days  
Stock options outstanding, aggregate intrinsic value $ 2,019 $ 2,019
Stock options exercisable, aggregate intrinsic value $ 2,019