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STOCKHOLDERS' EQUITY (Details 1) - $ / shares | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 27, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of Options, outstanding at the beginning of the year: |  | 3,516,706 | 3,611,706
Number of Options, Granted | 14,126 | 0 | 0
Number of Options, Exercised |  | 0 | 0
Number of Options, Expired / Forfeited |  | (509,706) | (95,000)
Number of Options, Outstanding at end of year |  | 3,007,000 | 3,516,706
Number of Options, exercisable at year-end |  | 3,007,000 | 3,516,706
Number of Options, vested and expected to vest at year end |  | 3,007,000 | 3,516,706
Weighted average exercise price, outstanding at the beginning of the year: |  | $ 0.34 | $ 0.37
Weighted average exercise price, Granted | $ 10.70 |  | 0.37
Weighted average exercise price, Expired / Forfeited |  | 0.64 | 1.49
Weighted average exercise price, Outstanding at end of year |  | 0.29 | 0.34
Weighted average exercise price, Options exercisable at year-end |  | 0.29 | 0.34
Weighted average exercise price, Options vested and expected to vest at year end |  | $ 0.29 | $ 0.34
Weighted average remaining contractual term, Outstanding (years) |  |  | 4 years 5 months 16 days
Weighted average remaining contractual term, Options Exercisable (years) |  |  | 4 years 5 months 16 days
Weighted average remaining contractual term, Options vested and expected to vest at year end (years) |  |  | 4 years 4 months 17 days

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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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