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Stock-Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Number of Shares, Outstanding Beginning 28,000 35,000
Number of Shares, Exercised (7,000)  
Number of Shares, Expired (7,000) (7,000)
Number of Shares, Outstanding Ending 14,000 28,000
Weighted Average Exercise Price, Outstanding Beginning $ 2.10 $ 1.92
Weighted Average Exercise Price, Exercised 2.92  
Weighted Average Exercise Price, Expired 1.02 1.21
Weighted Average Exercise Price, Outstanding Ending $ 2.23 $ 2.10
Weighted Average Remaining Contractual Term (in years), Outstanding 1 year 9 months 2 years 4 months 6 days
Weighted Average Remaining Contractual Term (in Years), Outstanding 1 year 1 year 9 months
Aggregate Intrinsic Value Outstanding, Beginning $ 19,851 $ 24,876
Aggregate Intrinsic Value, Outstanding Ending $ 10,513 $ 19,851