Shareholders' Equity - Schedule of Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of Shares Subject to Option, Granted	150,182	158,000	85,250
Stock Option [Member]
Number of Shares Subject to Option, Beginning	978,910	1,291,866	1,407,006
Number of Shares Subject to Option, Granted	150,182	158,000	85,250
Number of Shares Subject to Option, Cancelled		(470,956)	(200,390)
Number of Shares Subject to Option, Exercised	(3,000)
Number of Shares Subject to Option, Ending	1,126,092	978,910	1,291,866
Weighted Average Exercise Price, Beginning	$ 4.26	$ 7.11	$ 7.49
Weighted Average Exercise Price, Granted	1.00	1.06	1.83
Weighted Average Exercise Price, Cancelled		10.57	5.89
Weighted Average Exercise Price, Exercised	1.06
Weighted Average Exercise Price, Ending	$ 3.84	$ 4.26	$ 7.11
Weighted Average Remaining Contractual Term (Years), Beginning	7 years 1 month 6 days	6 years 2 months 12 days	6 years 2 months 12 days
Weighted Average Remaining Contractual Term (Years), Ending	6 years 7 months 6 days	7 years 1 month 6 days	6 years 2 months 12 days
Aggregate Intrinsic Value	$ 161,602