Stockholders' Equity - Schedule of Stock Options Activity (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Equity [Abstract]
Number of Stock Options outstanding, beginning of year	496,667	560,417	531,667	557,917
Number of options, Granted		13,750		41,250
Number of options, Redeemed		(30,000)	(22,500)	(55,000)
Number of options, Exercised			(7,500)
Number of options, Expired / terminated			(5,000)
Number of options outstanding, end of year	496,667	544,167	496,667	544,167
Number of options exercisable, end of year	496,009	534,167	496,009	534,167
Weighted Exercise Price outstanding, beginning of year	$ 1.82	$ 1.68	$ 1.80	$ 1.60
Weighted average exercise price, Granted		3.76		4.42
Weighted average exercise price, Redeemed		1.20	1.70	1.22
Weighted average exercise price, Exercised			1.40
Weighted average exercise price, Expired / terminated			1.40
Weighted average exercise price outstanding, end of year	1.82	1.85	1.82	1.85
Weighted average exercise price exercisable, end of year	$ 1.81	$ 1.87	$ 1.81	$ 1.87