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STOCK-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2017
Summary of Stock Option Activity Under the Option Plan | A summary of activity under the 2005 and 2017 Stock Plans for the years ended December 31, 2017 and 2016 are presented below:
|  | Number of Shares (in thousands) |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at December 31, 2015 |  |  | 1,685 |  | $ | 0.46 |  |  |  |  | $ | 235 |
Granted |  |  | 877 |  | $ | 0.26 |  |  |  |  |  |  |
Exercised |  |  | (1) |  |  | 0.15 |  |  |  |  |  |  |
Forfeited |  |  | (330) |  | $ | 0.36 |  |  |  |  |  |  |
Outstanding at December 31, 2016 |  |  | 2,231 |  | $ | 0.40 |  |  | 6.7 |  | $ | 135 |
Outstanding at December 31, 2016 |  |  | 2,231 |  | $ | 0.40 |  |  |  |  |  |  |
Granted |  |  | 662 |  | $ | 0.86 |  |  |  |  |  |  |
Exercised |  |  | (38) |  | $ | 1.02 |  |  |  |  |  |  |
Forfeited/Canceled |  |  | (803) |  | $ | 0.33 |  |  |  |  |  |  |
Outstanding at December 31, 2017 |  |  | 2,052 |  | $ | 0.56 |  |  | 6.5 |  | $ | 5,334 |
Exercisable at December 31, 2017 |  |  | 1,460 |  | $ | 0.40 |  |  | 5.3 |  |  |  |
Summary of Stock Options Outstanding Under The Plans | The following is a summary of stock options outstanding under the plans as of December 31, 2017:
Range |  | Outstanding Number of Shares (in thousands) |  | WA Remaining Contractual Life (years) |  | WA Outstanding Strike Price |  | Exercisable Number of Shares (in thousands) |  | Remaining Exercisable Contractual Life (years) |  | WA Exercisable Strike Price |
$0 to $.50 |  |  | 1,540 |  |  | 6.96 |  | $ | 0.27 |  |  | 1,155 |  |  | 6.25 |  | $ | 0.24 |
$.51 to $1.00 |  |  | 283 |  |  | 3.59 |  | $ | 0.89 |  |  | 233 |  |  | 2.29 |  | $ | 0.93 |
$1.01 to $1.50 |  |  | 69 |  |  | 3.09 |  | $ | 1.24 |  |  | 54 |  |  | 1.19 |  | $ | 1.19 |
$1.51 to $2.00 |  |  | 30 |  |  | 4.19 |  | $ | 1.73 |  |  | 18 |  |  | 0.49 |  | $ | 1.68 |
$2.00 to $3.00 |  |  | 130 |  |  | 9.95 |  | $ | 2.65 |  |  | - |  |  | 0.00 |  | $ | - |
|  |  | 2,052 |  |  | 6.52 |  | $ | 0.56 |  |  | 1,460 |  |  | 5.36 |  | $ | 0.40 |
Summary of Status of the Company's Non-Vested Shares Under Option | A summary of status of the Company’s non-vested share awards as of and for the years ended December 31, 2017 and 2016 are presented below:
|  | Non-vested Shares Under Option |  | Weighted Average Grant Date Fair Value |
Non-vested at December 31, 2016 |  |  | 572 |  | $ | 0.24 |
Granted |  |  | 897 |  | $ | 0.70 |
Vested |  |  | (267) |  | $ | 0.25 |
Exercised |  |  | - |  | $ | - |
Forfeited |  |  | (610) |  | $ | 0.29 |
Non-vested at December 31, 2017 |  |  | 592 |  | $ | 0.88 |
Stock Option [Member] |
Fair Value of Stock Options Grants | The Company uses the Black Scholes option pricing model to determine the fair value of stock option grants, using the following assumptions during the years ended December 31, 2017 and 2016:
|  | 2017 |  |  | 2016 |
Weighted average expected term |  |  | 6.25 years |  |  |  | 6.25 years |
Weighted average volatility |  |  | 124 | % |  |  | 122 | %
Weighted average risk-free interest rate |  |  | 1.83 | % |  |  | 1.48 | %
Dividend yield |  |  | 0 | % |  |  | 0 | %

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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://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 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -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 (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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