XML 48 R30.htm IDEA: XBRL DOCUMENT
v3.20.4

Share-based compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Share-based compensation |
Schedule of 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 has utilized the “simplified” method, as prescribed by the SEC’s Staff Accounting Bulletin (“SAB”) No.110, Share-Based Payment, to compute expected lives of share based awards with the following weighted-average assumptions:
Years ended |  |  |  |  |
December 31, |  | 2020 |  | 2019 |
Assumptions |  |  |  |  |
Dividend yield |  | 0 | % | 0 | %
Risk free interest rate |  | 0.27%-0.29 | % | 1.43%-2.47 | %
Expected volatility |  | 101%-103 | % | 65%-76 | %
Expected lives |  | 2.75-5 years |  | 3-5 years |
Schedule of company's stock option plan | A summary of the activity for the Company’s Plans for the indicated periods is presented below:
|  |  |  | Weighted
|  |  |  | Average
Stock Option Plan Totals |  | Shares |  | Exercise Price
Outstanding at December 31, 2018 |  | 4,415,397 |  | $ | 1.20
-Cancelled |  | (527,820) |  | $ | 1.23
-Exercised |  | (10,000) |  | $ | 0.89
-Granted |  | 3,164,800 |  | $ | 0.79
Outstanding at December 31, 2019 |  | 7,042,377 |  | $ | 1.01
-Cancelled |  | — |  | $ | —
-Exercised |  | (1,967,562) |  | $ | 0.91
-Granted |  | 254,700 |  | $ | 1.11
Outstanding at December 31, 2020 |  | 5,329,515 |  | $ | 1.06
Schedule of 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, 2020 and 2019 of:
|  |  |  | Weighted |  |  |
|  |  |  | Average |  |  |
|  |  |  | Remaining |  | Weighted
|  | Number of |  | Contractual |  | Average
December 31, 2020 |  | Options |  | Life |  | Exercise Price
Options outstanding |  | 5,329,515 |  | 3.55 |  | $ | 1.06
Options vested |  | 5,261,947 |  | 3.54 |  | $ | 1.05
Options unvested |  | 67,568 |  | 4.71 |  | $ | 1.23
|  |  |  | Weighted |  |  |
|  |  |  | Average |  |  |
|  |  |  | Remaining |  | Weighted
|  | Number of |  | Contractual |  | Average
December 31, 2019 |  | Options |  | Life |  | Exercise Price
Options outstanding |  | 7,042,377 |  | 5.0 years |  | $ | 1.01
Options vested |  | 5,922,377 |  | 4.0 years |  | $ | 1.06
Options unvested |  | 1,120,000 |  | 10.0 years |  | $ | 0.75
Schedule of intrinsic value | The intrinsic values of options vested and exercised during the years ended 2020 and 2019 were as follows:
|  | 2020 |  | 2019
Intrinsic value of options vested |  | $ | 393,952 |  | $ | 436,000
Intrinsic value of options exercised |  | $ | 843,893 |  | $ | 11,100

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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 (e) -URI http://asc.fasb.org/extlink&oid=120381028&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 (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&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 (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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=120381028&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=120381028&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=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration