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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity [Abstract] |
Schedule of Warrant Activity | The following is a summary with respect to warrants outstanding and exercisable at December 31, 2019 and 2018 and activity during the years then ended:
|  | 2019 |  |  | 2018 |
|  | Number of Warrants |  |  | Weighted Average Exercise Price |  |  | Number of Warrants |  |  | Weighted Average Exercise Price |
Outstanding at January 1, |  |  | 1,430,116 |  |  | $ | 4.00 |  |  |  | 2,645,090 |  |  | $ | 10.98 |
Granted |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Lapsed/terminated |  |  | (209,812 | ) |  |  | 20.78 |  |  |  | (1,214,974 | ) |  |  | 19.20 |
Outstanding at December 31, |  |  | 1,220,304 |  |  | $ | 1.12 |  |  |  | 1,430,116 |  |  | $ | 4.00 |
Exercisable at December 31, |  |  | 1,220,304 |  |  | $ | 1.12 |  |  |  | 1,430,116 |  |  | $ | 4.00 |
Weighted average of months remaining |  |  |  |  |  |  | 20.7 |  |  |  |  |  |  |  | 27.9 |
Summary of Stock Option Activity Under Stock Option and Incentive Plans | The following is a summary with respect to options outstanding at December 31, 2019 and 2018 and activity during the years then ended:
|  | 2019 |  |  | 2018 |
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average life Remaining (Years) |  |  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average life Remaining (Years) |
Outstanding at January 1, |  |  | 782,655 |  |  | $ | 6.66 |  |  |  |  |  |  |  | 482,667 |  |  | $ | 10.72 |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  | 405,000 |  |  |  | 1.38 |  |  |  |  |
Lapsed/terminated |  |  | (204,738 | ) |  |  | 7.7 |  |  |  |  |  |  |  | (105,012 | ) |  |  | 4.96 |  |  |  |  |
Outstanding at December 31, |  |  | 577,917 |  |  | $ | 5.01 |  |  |  | 3.2 |  |  |  | 782,655 |  |  | $ | 6.66 |  |  |  | 3.2 |
Exercisable at December 31, |  |  | 408,750 |  |  | $ | 6.50 |  |  |  | 3.5 |  |  |  | 490,988 |  |  | $ | 8.30 |  |  |  | 2.8 |
Expected to vest at December 31, |  |  | 169,167 |  |  | $ | 1.43 |  |  |  | 3.4 |  |  |  | 291,667 |  |  | $ | 1.41 |  |  |  | 4.5 |
Aggregate intrinsic value of outstanding options at December 31, |  | $ | - |  |  |  |  |  |  |  |  |  |  | $ | - |  |  |  |  |  |  |  |  |
Aggregate intrinsic value of exercisable options at December 31, |  | $ | - |  |  |  |  |  |  |  |  |  |  | $ | - |  |  |  |  |  |  |  |  |
Aggregate intrinsic value of options expected to vest at December 31, |  | $ | - |  |  |  |  |  |  |  |  |  |  | $ | - |  |  |  |  |  |  |  |  |
Schedule of Assumptions Used to Compute the Share-based Compensation Expense for Stock Options and Warrants | The following table shows our weighted average assumptions used to compute the share-based compensation expense for stock options and warrants granted during the year ended December 31, 2018. There were no options or warrants granted for compensation during the year ended December 31, 2019.
Volatility |  |  | 98.20 | %
Expected option term |  |  | 3.6 years |
Risk-free interest rate |  |  | 2.7 | %
Expected forfeiture rate |  |  | 0.0 | %
Expected dividend yield |  |  | 0.0 | %

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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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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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