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Note L - Stock Option Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Share-based Compensation, Stock Options, Activity [Table Text Block] |
| Number of Options |  | Wei ghted Averaged Exercise Price $ |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Options Value $ |
Options outstanding January 1, 2016 | 1,419,436 |  | 1.56 |  | 2.79 |  | 1,220,338 |
Exercisable, January 1, 2016 | 1,041,680 |  | 1.29 |  | 2.41 |  | 1,135,819 |
Granted | 520,337 |  | 1.79 |  | 4.38 |  |  |
Exercised during 2016 | (327,778 | ) | 0.75 |  | - |  | - |
Forfeited or expired | (100,000 | ) | 2.35 |  | - |  | - |
Options outstanding December 31, 2016 | 1,511,995 |  | 1.74 |  | 2.97 |  | 102,605 |
Exercisable, December 31, 2016 | 1,054,202 |  | 1.65 |  | 2.51 |  | 102,605 |
Granted | 1,006,741 |  | 1.82 |  | 4.69 |  | 25,610 |
Exercised during 2017 | (83,333 | ) | 0.75 |  | - |  | - |
Forfeited, cancelled, or expired | (1,250,068 | ) |  |  | - |  | - |
Options outstanding December 31, 2017 | 1,985,325 |  | 1.74 |  | 3.04 |  | 25,160 |
Exercisable, December 31, 2017 | 1,317,4416 |  | 1.84 |  | 2.46 |  | 8,537 |
| Number of Options |  | Weighted Averaged Exercise Price $ |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intr insic Options Value $
Outstanding, January 1, 2016 | 8,333 |  | 2.70 |  | 4.83 |  |
Exercisable, January 1, 2016 | 2,777 |  | 2.70 |  | 4.83 |  |
Granted | 216,666 |  | 2.53 |  | - |  |
Exercised | - |  | - |  | - |  | -
Outstanding, December 31, 2016 | 224,999 |  | 2.53 |  | 5.32 |  | -
Exercisable, December 31, 2016 | 14,734 |  | 2.72 |  | 4.36 |  | -
Granted 2017 | - |  | - |  | - |  | -
Exercised 2017 | - |  | - |  | - |  | -
Outstanding, December 31, 2017 | 224,999 |  | 2.52 |  | 3.51 |  | -
Exercisable, December 31, 2017 | 23,067 |  | 2.22 |  | 4.38 |  | -
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2017 |  | 2016
Volatility |  |  | 81.23% -97.24% |  |  | 134.53%- 194.34%
Risk-free interest |  |  | 1.4%- 2.2% |  |  | .04%-1.47%
Expected Life |  | 2-5 years |  | 5 years
Dividend yield |  |  | 0 |  |  | 0
Forfeiture Rate |  |  | 6 |  |  | 6

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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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