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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity Note [Abstract] |
Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of option activity under our stock option plans for the years ended December 31, 2018 and 2017 is as follows:
|  | 2018 |  |  | 2017 |
|  | Number of Options |  |  | Weighted average exercise price |  |  | Number of Options |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (years) |
Options outstanding at the beginning of the year: |  |  | 3,516,706 |  |  | $ | 0.34 |  |  |  | 3,611,706 |  |  | $ | 0.37 |  |  |  |  |
Granted |  |  | - |  |  |  |  |  |  |  | - |  |  | $ | 0.37 |  |  |  |  |
Exercised |  |  | - |  |  |  |  |  |  |  | - |  |  |  |  |  |  |  |  |
Expired/Forfeited |  |  | (509,706 | ) |  | $ | 0.64 |  |  |  | (95,000 | ) |  | $ | 1.49 |  |  |  |  |
Outstanding at end of year |  |  | 3,007,000 |  |  | $ | 0.29 |  |  |  | 3,516,706 |  |  | $ | 0.34 |  |  |  | 4.46 |
Options exercisable at year-end |  |  | 3,007,000 |  |  | $ | 0.29 |  |  |  | 3,516,706 |  |  | $ | 0.34 |  |  |  | 4.46 |
Options vested and expected to vest at year end |  |  | 3,007,000 |  |  | $ | 0.29 |  |  |  | 3,516,706 |  |  | $ | 0.34 |  |  |  | 4.38 |

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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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