Stockholders' Equity - Schedule of Stock Options Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Options outstanding, beginning of year	557,917	833,967
Number of options, Granted / Vested	41,250	46,667
Number of options, Redeemed	(67,500)	(250,000)
Number of options, Exercised		(15,000)
Number of options, Expired / terminated		(57,717)
Number of options outstanding, end of year	531,667	557,917
Number of options exercisable, end of year	521,667	537,917
Weighted Exercise Price outstanding, beginning of year	$ 1.60	$ 1.20
Weighted average exercise price, Granted / Vested	4.42	3.84
Weighted average exercise price, Redeemed	1.25	0.84
Weighted average exercise price, Exercised		0.84
Weighted average exercise price, Expired / terminated		1.04
Weighted average exercise price outstanding, end of year	1.86	1.60
Weighted average exercise price exercisable, end of year	$ 1.85	$ 1.58