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Capital Stock, Stock Plans,Warrants, and Stock Based Compensation - Schedule of Stock Options Roll Forward (Details) (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Stock Option Outstanding [Member] |  |
Stock option exercise price per share lower limit | $ 2.79 | $ 2.79
Stock option exercise price per share upper limit | 7.29 | 8.40
Stock Option Exercisable [Member] |  |
Stock option exercise price per share lower limit | 2.79 | 2.79
Stock option exercise price per share upper limit | $ 7.05 | $ 8.40

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