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Stockholders' Equity (Details) - Share-based Compensation, Stock Options, Activity - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation, Stock Options, Activity [Abstract]    
Number of Shares, Outstanding   340,500
Average Exercise Price per Share, Outstanding   $ 5.97
Aggregate Intrinsic Value, Outstanding   $ 0
Weighted Average Remaining Contractual Term in Years, Outstanding 2 years 120 days 3 years 120 days
Number of Shares, Exercisable   292,000
Average Exercise Price per Share, Exercisable   $ 6.48
Aggregate Intrinsic Value, Exercisable   $ 0
Weighted Average Remaining Contractual Term in Years, Exercisable 2 years 120 days 3 years 29 days
Number of Shares, Granted 0  
Average Exercise Price per Share, Granted $ 0  
Number of Shares, Exercised 0  
Average Exercise Price per Share, Exercised $ 0  
Number of Shares, Forfeited 0  
Average Exercise Price per Share, Forfeited $ 0  
Number of Shares, Outstanding 340,500  
Average Exercise Price per Share, Outstanding $ 5.97  
Aggregate Intrinsic Value, Outstanding [1] $ 0  
Number of Shares, Exercisable 340,500  
Average Exercise Price per Share, Exercisable $ 5.97  
Aggregate Intrinsic Value, Exercisable [1] $ 0  
[1] The intrinsic value of the stock options at December 31, 2020 is the amount by which the market value of the Company’s common stock of $2.38 as of December 31, 2020 exceeds the exercise price of the option.