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Note P - Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Number of Options |  |  | Weighted average exercise |  |  | Weighted average remaining life |  |  | Aggregate intrinsic |
|  | 1999 Plan |  |  | 2004 Plan |  |  | 2015 Plan |  |  | Non Plan |  |  | Total |  |  | price |  |  | (in years) |  |  | value |
Outstanding, as of December 31, 2014 |  |  | 20,834 |  |  |  | 136,276 |  |  |  | — |  |  |  | 184,167 |  |  |  | 341,277 |  |  | $ | 4.32 |  |  |  |  |  |  |  |  |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 119,000 |  |  |  | 119,000 |  |  |  | 2.16 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | (3,473 | ) |  |  | — |  |  |  | (38,531 | ) |  |  | (42,004 | ) |  |  | 3.72 |  |  |  |  |  |  |  |  |
Expired |  |  | — |  |  |  | (47,795 | ) |  |  | — |  |  |  | (5,548 | ) |  |  | (53,343 | ) |  |  | 3.00 |  |  |  |  |  |  |  |  |
Outstanding, as of December 31, 2015 |  |  | 20,834 |  |  |  | 85,008 |  |  |  | — |  |  |  | 259,088 |  |  |  | 364,930 |  |  | $ | 3.87 |  |  |  | 4.57 |  |  | $ | 240 |
Granted |  |  | — |  |  |  | — |  |  |  | 27,087 |  |  |  | — |  |  |  | 27,087 |  |  |  | 2.74 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  | (2,084 | ) |  |  | (8,335 | ) |  |  | (10,419 | ) |  |  | 2.16 |  |  |  |  |  |  |  |  |
Expired |  |  | (20,834 | ) |  |  | (15,628 | ) |  |  | — |  |  |  | (3,473 | ) |  |  | (39,935 | ) |  |  | 2.50 |  |  |  |  |  |  |  |  |
Outstanding, as of December 31, 2016 |  |  | — |  |  |  | 69,380 |  |  |  | 25,003 |  |  |  | 247,280 |  |  |  | 341,663 |  |  | $ | 3.99 |  |  |  | 4.23 |  |  | $ | 53,936 |
Vested or expected to vest at December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 307,164 |  |  | $ | 4.16 |  |  |  | 4.04 |  |  | $ | 41,816 |
Exercisable at December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 216,566 |  |  | $ | 4.56 |  |  |  | 3.51 |  |  | $ | 17,367 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |
|  |  |  |  |  | Options Outstanding |  |  | Options Exercisable |
Range of exercise prices |  |  | Number of shares |  |  | Weighted average exercise price |  |  | Weighted average remaining life (in years) |  |  | Number exercisable |  |  | Weighted average exercise price |
$ | 1.90 | - | 3.00 |  |  |  | 122,485 |  |  | $ | 2.24 |  |  |  | 5.81 |  |  |  | 34,815 |  |  | $ | 2.15 |
| 3.01 | - | 5.00 |  |  |  | 197,927 |  |  |  | 4.47 |  |  |  | 3.66 |  |  |  | 160,500 |  |  |  | 4.41 |
| 5.01 | - | 11.04 |  |  |  | 21,251 |  |  |  | 9.67 |  |  |  | 0.72 |  |  |  | 21,251 |  |  |  | 9.67 |
$ | 1.90 | - | 11.04 |  |  |  | 341,663 |  |  |  |  |  |  |  |  |  |  |  | 216,566 |  |  |  |  |

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- Definition Tabular disclosure of the number of fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both options (or share units) currently outstanding and options (or share units) exercisable (or convertible). + 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 (e) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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