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Stock Options - Schedule of Stock Option Activity (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Number of shares, Beginning Balance | 713,000 | 813,000
Number of shares, Granted | 110,000 | 154,000
Number of shares, Cancelled or expired | (61,334) | (114,000)
Number of shares, Exercised | (101,666) | (140,000)
Number of shares, Ending Balance | 660,000 | 713,000
Number of shares Exercisable, Ending Balance | 555,000 |
Exercise price per share, Granted |  | $ 1.70
Weighted average exercise price, Beginning Balance | $ 1.21 | 1.19
Weighted average exercise price, Granted | 1.74 | 1.70
Weighted average exercise price, Cancelled or expired | 1.09 | 1.75
Weighted average exercise price, Exercised | 1.01 | 1.11
Weighted average exercise price, Ending Balance | 1.35 | 1.21
Weighted average exercise price Exercisable, Ending Balance | 1.27 |
Minimum [Member] |  |
Exercise price per share, Beginning Balance | 0.75 | 0.75
Exercise price per share, Granted | 1.48 |
Exercise price per share, Cancelled or expired | 1.00 | 1.00
Exercise price per share, Exercised | 0.75 | 0.75
Exercise price per share, Ending Balance | 0.75 | 0.75
Exercise price per share Exercisable, Ending Balance | 0.75 |
Maximum [Member] |  |
Exercise price per share, Beginning Balance | 1.70 | 2.22
Exercise price per share, Granted | 1.75 |
Exercise price per share, Cancelled or expired | 1.70 | 2.22
Exercise price per share, Exercised | 1.42 | 1.21
Exercise price per share, Ending Balance | 1.75 | $ 1.70
Exercise price per share Exercisable, Ending Balance | $ 1.70 |

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