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Stock Options (Tables) | 9 Months Ended
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Sep. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | The following table summarizes the Company’s stock option activities for the year ended December 31, 2017 and the nine month period ended September 30, 2019:
|  | Number of shares |  |  | Exercise price per share |  |  | Weighted average exercise price |
Balance, December 31, 2017 |  |  | 713,000 |  |  |  | $0.75 – 1.70 |  |  | $ | 1.21 |
Granted |  |  | 110,000 |  |  |  | $1.48 – 1.75 |  |  | $ | 1.74 |
Cancelled or expired |  |  | (61,334 | ) |  |  | $1.00 – 1.70 |  |  | $ | 1.09 |
Exercised |  |  | (101,666 | ) |  |  | $0.75 – 1.42 |  |  | $ | 1.01 |
Balance, December 31, 2018 |  |  | 660,000 |  |  |  | $0.75 – 1.75 |  |  | $ | 1.35 |
Granted |  |  | 153,000 |  |  | $ | 3.46 |  |  | $ | 3.46 |
Cancelled or expired |  |  | (49,112 | ) |  |  | $0.75 – 3.46 |  |  | $ | 1.46 |
Exercised |  |  | (289,888 | ) |  |  | $0.75 – 1.70 |  |  | $ | 1.16 |
Balance, September 30, 2019 |  |  | 474,000 |  |  |  | $0.75 – 3.46 |  |  | $ | 2.10 |
Exercisable, September 30, 2019 |  |  | 221,000 |  |  |  | $0.75 – 1.70 |  |  | $ | 1.34 |
Schedule of Stock Option Fair Value Assumptions | The fair value of each option grant is calculated using the following weighted average assumptions:
|  | 2019 |  |  | 2018 |
Expected life – years |  |  | 3.0 |  |  |  | 3.0 |
Interest rate |  |  | 1.93 | % |  |  | 2.8 – 2.96 | %
Volatility |  |  | 43.89 | % |  |  | 47.59 – 51.85 | %
Weighted average fair value of options granted |  | $ | 1.0959 |  |  | $ | 0.4759 – 0.6313 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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