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Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity Note [Abstract] |
Summary of stock options using the black-scholes model |
Expected Terms (years) |  | Expected Volatility |  | Dividend Yield |  | Risk Free Interest Rate |  | Grant Date Fair Value Per share
10 |  | 126%-228% |  | 0% |  | 0.73%-1.65% |  | $1.22-$5.15
Summary of option activity |
Stock options |  | Shares |  |  | Weighted average exercise price |  |  | Aggregate intrinsic value (1) |
Outstanding as of January 1, 2017 |  |  | 1,237,867 |  |  | $ | 2.17 |  |  |  |  |
Forfeited |  |  | (221,000 | ) |  |  | - |  |  |  |  |
Outstanding as of December 31, 2017 |  |  | 1,016,867 |  |  | $ | 2.26 |  |  |  |  |
Forfeited |  |  | (84,000 | ) |  |  |  |  |  |  |  |
Exercised |  |  | (51,000 | ) |  |  |  |  |  |  |  |
Outstanding as of December 31, 2018 |  |  | 881,867 |  |  | $ | 2.34 |  |  | $ | - |
| (1) | The intrinsic value of the stock options at December 31, 2018 is the amount by which the market value of the Company's common stock of $1.13 as of December 31, 2018 exceeds the exercise price of the options.
Summary of options outstanding and exercisable |
Outstanding options |  |  | Exercisable options |
Average exercise price |  |  | Number |  |  | Average remaining contractual life (years) |  |  | Average exercise price |  |  | Number |  |  | Average remaining contractual life (years) |
$ | 1.45 |  |  |  | 107,000 |  |  |  | 3.00 |  |  | $ | 1.45 |  |  |  | 107,000 |  |  |  | 3.00 |
$ | 2.30 |  |  |  | 94,000 |  |  |  | 4.77 |  |  | $ | 2.30 |  |  |  | 94,000 |  |  |  | 4.77 |
$ | 5.31 |  |  |  | 131,000 |  |  |  | 5.64 |  |  | $ | 5.31 |  |  |  | 104,800 |  |  |  | 5.64 |
$ | 1.64 |  |  |  | 159,000 |  |  |  | 6.60 |  |  | $ | 1.64 |  |  |  | 159,000 |  |  |  | 6.60 |
$ | 1.88 |  |  |  | 390,867 |  |  |  | 7.22 |  |  | $ | 1.88 |  |  |  | 390,867 |  |  |  | 7.22 |
|  |  |  |  | 881,867 |  |  |  |  |  |  |  |  |  |  |  | 855,667 |  |  |  |  |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=109197908&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://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=109197908&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=109197908&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=109197908&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=109197908&loc=d3e5070-113901 + Details
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