Stock-based Compensation (Details 1)	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning | shares	1,721,171
Granted | shares	8,218
Exercised | shares	(18,474)
Forfeited | shares	(39,500)
Expired | shares
Outstanding at ending | shares	1,635,889
Exercisable at ending | shares	1,416,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at beginning	$ 1.57
Granted	0.854
Exercised	0.50
Forfeited
Expired
Outstanding at ending	1.54
Exercisable at ending	$ 1.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Life [Roll Forward]
Outstanding at beginning	4 years
Granted	4 years 10 months 24 days
Outstanding at ending	3 years 9 months 18 days
Exercisable at ending	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward]
Outstanding at beginning | $		[1]
Granted	$ 3	[1]
Outstanding at ending | $		[1]
Exercisable at ending | $		[1]

[1] The aggregate intrinsic value in the table was calculated based on the difference between the estimated fair market value of the Company's stock and the exercise price of the underlying options. The estimated stock values used in the calculation was $1.22 and $0.59 per share for the three months ended March 31, 2019 and the year ended December 31, 2018, respectively.