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Stockholders' Equity - Schedule of Stock Option Activity (Details) - Stock Option Plans [Member] - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares Subject to Issuance, Outstanding 1,631,358 1,665,420
Number of Shares Subject to Issuance, Granted 102,500
Number of Shares Subject to Issuance, Forfeited or expired (67,488) (24,062)
Number of Shares Subject to Issuance, Exercised (593,838) (10,000)
Number of Shares Subject to Issuance, Outstanding 1,072,332 1,631,358
Number of Shares Subject to Issuance, Exercisable 937,332  
Weighted-average Exercise Price, Outstanding $ 1.36 $ 1.40
Weighted-average Exercise Price, Granted 2.86
Weighted-average Exercise Price, Forfeited or expired 4.18 4.06
Weighted-average Exercise Price, Exercised 1.16 1.01
Weighted-average Exercise Price, Outstanding 1.44 $ 1.36
Weighted-average Exercise Price, Exercisable $ 1.28  
Weighted-average Remaining Contractual Term, Outstanding Beginning 1 year 8 months 12 days 3 years 7 months 13 days
Weighted-average Remaining Contractual Term, Outstanding Ending 1 year 10 months 6 days 1 year 8 months 12 days
Weighted-average Remaining Contractual Term, Exercisable 1 year 6 months 29 days  
Outstanding-Aggregate Intrinsic Value, Ending $ 881,493 $ 2,106,669
Exercisable-Aggregate Intrinsic Value $ 864,092