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12. STOCK-BASED COMPENSATION (Details 1) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation [Abstract] |  |  |
Outstanding | 808,500 | 185,000 | 2,399,000
Range of Exercise Prices, Lower Limit | $ 1.44 |  |
Range of Exercise Prices, Upper Limit | $ 4.80 |  |
Weighted Average Remaining Contractual Life (Years) | 3 years 1 month 10 days |  |
Weighted Average Exercise Price of Options Currently Outstanding | $ 1.61 | $ 2.19 | $ 1.39

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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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