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Stockholders' Equity (Details 1) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Employee Stock Option [Member]      
Weighted Average Fair Value at Grant Date, Stock options granted during the six-month period ended June 30, 2020 $ 2.03 $ 3.31  
Weighted Average Exercise Price, Stock options granted during the six-month period ended June 30, 2020 4.40   $ 5.90
Weighted Average Exercise Price, Stock options that were forfeited during the six-month period ended June 30, 2020 $ 5.53   $ 6.05
Equity Option [Member]      
Number of Shares, Non-vested stock options as of January 1, 2020 321,000    
Number of Shares, Non-vested stock options as of June 30, 2020 245,000   321,000
Number of Shares, Stock options that vested during the six-month period ended June 30, 2020 108,000    
Number of Shares, Stock options that were forfeited during the six-month period ended June 30, 2020 12,000    
Weighted Average Fair Value at Grant Date, Non-vested stock options as of January 1, 2020 $ 3.49    
Weighted Average Fair Value at Grant Date, Non-vested stock options as of June 30, 2020 3.28   $ 3.49
Weighted Average Fair Value at Grant Date, Stock options that vested during the six-month period ended June 30, 2020 3.43    
Weighted Average Fair Value at Grant Date, Stock options that were forfeited during the six-month period ended June 30, 2020 2.91    
Weighted Average Exercise Price, Non-vested stock options as of January 1, 2020 6.55    
Weighted Average Exercise Price, Non-vested stock options as of June 30, 2020 6.47   $ 6.55
Weighted Average Exercise Price, Stock options granted during the six-month period ended June 30, 2020 4.40    
Weighted Average Exercise Price, Stock options that vested during the six-month period ended June 30, 2020 5.98    
Weighted Average Exercise Price, Stock options that were forfeited during the six-month period ended June 30, 2020 $ 5.53