Stock Options - Schedule of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Number of shares, Beginning Balance	813,000	1,190,000
Number of shares, Granted	154,000	168,000
Number of shares, Cancelled or expired	(114,000)	(515,000)
Number of shares, Exercised	(140,000)	(30,000)
Number of shares, Ending balance	713,000	813,000
Number of shares, Exercisable, Ending balance	559,000
Exercise price per share, Granted	$ 1.70	$ 1.42
Weighted average exercise price, Beginning Balance	1.19	1.34
Weighted average exercise price, Granted	1.70	1.42
Weighted average exercise price, Cancelled or expired	1.75	1.61
Weighted average exercise price, Exercised	1.11	1.09
Weighted average exercise price, Ending Balance	1.21	1.19
Weighted average exercise price, Exercisable Ending balance	1.08
Minimum [Member]
Exercise price per share, Beginning Balance	0.75	0.75
Exercise price per share, Cancelled or expired	1.00	0.75
Exercise price per share, Exercised	0.75	1.00
Exercise price per share, Balance	0.75	0.75
Exercise price per share, Exercisable, Ending balance	0.75
Maximum [Member]
Exercise price per share, Beginning Balance	2.22	2.45
Exercise price per share, Cancelled or expired	2.22	2.45
Exercise price per share, Exercised	1.21	1.21
Exercise price per share, Balance	1.70	$ 2.22
Exercise price per share, Exercisable, Ending balance	$ 1.41