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Stockholders' Equity (Details 1) - Equity Option [Member] - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Number of Shares, Non-vested stock options as of December 31, 2020 248,000  
Number of Shares, Non-vested stock options as of March 31, 2021 122,000 248,000
Number of Shares, Stock options granted during the three-month period ended March 31, 2021 6,000 100,000
Number of Shares, Stock options that vested during the three-month period ended March 31, 2021 123,000  
Number of Shares, Stock options that were forfeited during the three-month period ended March 31, 2021 9,000  
Weighted Average Fair Value at Grant Date, Non-vested stock options as of December 31, 2020 $ 3.25  
Weighted Average Fair Value at Grant Date, Non-vested stock options as of March 31, 2021 2.84 $ 3.25
Weighted Average Fair Value at Grant Date, Stock options granted during the three-month period ended March 31, 2021 3.77 2.47
Weighted Average Fair Value at Grant Date, Stock options that vested during the three-month period ended March 31, 2021 3.68  
Weighted Average Fair Value at Grant Date, Stock options that were forfeited during the three-month period ended March 31, 2021 3.29  
Weighted Average Exercise Price, Non-vested stock options as of December 31, 2020 6.44  
Weighted Average Exercise Price, Non-vested stock options as of March 31, 2021 6.69 $ 6.44
Weighted Average Exercise Price, Stock options granted during the three-month period ended March 31, 2021 7.39  
Weighted Average Exercise Price, Stock options that vested during the three-month period ended March 31, 2021 7.34  
Weighted Average Exercise Price, Stock options that were forfeited during the three-month period ended March 31, 2021 $ 6.17