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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2017
Share-Based Compensation [Abstract] |
Weighted-average assumptions used in determining fair value of share based awards | The Company determines the fair value of share based awards at the grant date by using the Black-Scholes option-pricing model, and is incorporating the simplified method to compute expected lives of share based awards with the following weighted-average assumptions:
Years ended December 31, |  | 2017 |  |  | 2016 |  |  | 2015 |  |
Assumptions |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | % |
Risk free interest rate |  |  | 1.97%-2.08 | % |  |  | 0.%-1.0 | % |  |  | 0.83%-1.03 | % |
Expected volatility |  |  | 44%-46 | % |  |  | 47%-53 | % |  |  | 49%-60 | % |
Expected lives |  |  | 3 years |  |  |  | 3 years |  |  |  | 3 years |  |
Summary of status of company's stock option plan | A summary of the activity for the Company's Plans for the indicated periods is presented below:
Stock Option Plan Totals |  | Shares |  | Weighted Average Exercise Price |
Outstanding at December 31, 2014 |  |  | 3,280,874 |  | $ | 1.98 |
-Cancelled |  |  | (132,500) |  | $ | 3.72 |
-Exercised |  |  | (679,291) |  | $ | 1.65 |
-Granted |  |  | 164,506 |  | $ | 3.28 |
Outstanding at December 31, 2015 |  |  | 2,633,589 |  | $ | 2.06 |
-Exercised |  |  | (589,725) |  | $ | 2.43 |
-Granted |  |  | 1,170,534 |  | $ | 3.95 |
Outstanding at December 31, 2016 |  |  | 3,214,398 |  | $ | 2.68 |
-Exercised |  |  | (1,545,161) |  | $ | 2.27 |
-Granted |  |  | 1,400,203 |  | $ | 5.72 |
Outstanding at December 31, 2017 |  |  | 3,069,440 |  | $ | 4.28 |
Weighted average contractual life and exercise price | The following is the weighted average contractual life in years and the weighted average exercise price at December 31, 2017 and 2016 of:
|  | Number of |  | Weighted Average Remaining |  | Weighted Average |
2017 |  | Options |  | Contractual Life |  | Exercise Price |
Options outstanding |  |  | 3,069,440 |  |  | 2.4 years |  | $ | 4.28 |
Options vested |  |  | 1,308,203 |  |  | 3.0 years |  | $ | 3.94 |
Options unvested |  |  | 92,000 |  |  | 0.9 years |  | $ | 5.76 |
|  | Number of |  | Weighted Average Remaining |  | Weighted Average |
2016 |  | Options |  | Contractual Life |  | Exercise Price |
Options outstanding |  |  | 3,214,398 |  |  | 2.0 years |  | $ | 2.68 |
Options vested |  |  | 1,191,368 |  |  | 3.0 years |  | $ | 3.94 |
Intrinsic value | The intrinsic values of options vested and exercised during the years ended 2017, 2016 and 2015 were as follows :
|  | 2017 |  | 2016 |  | 2015 |
Intrinsic value of options vested |  | $ | 462,369 |  | $ | 4,843,774 |  | $ | 5,000 |
Intrinsic value of options exercised |  | $ | 8,025,527 |  | $ | 1,777,476 |  | $ | 1,309,000 |

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- Definition Tabular disclosure for share-based compensation 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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