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Note D - Stock Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Disclosure Text Block Supplement [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Nine Months Ended September 30,
|  | 2013 |  |  | 2012
Dividend yield |  |  | 0% |  |  |  | 0 | %
Volatility |  |  | 62.69% |  |  | 57.88% | - | 65.89%
Risk-free rate |  |  | 0.61% |  |  | 0.64% | - | 1.09%
Expected life (in years) |  |  | 4.3 |  |  | 4.2 | - | 6.5
Fair value of options |  |  | $5.13 |  |  | $5.54 | - | 6.06
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Shares Under Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value* |
|  |  |  |  |  | (per share) |  |  | (in years) |  |  |  |  |
Outstanding-beginning of year |  |  | 235,379 |  |  | $ | 11.38 |  |  |  |  |  |  |  |  |
Granted |  |  | 35,000 |  |  |  | 10.44 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,790 | ) |  |  | 10.44 |  |  |  |  |  |  |  |  |
Cancelled/forfeited/expired |  |  | (99,024 | ) |  |  | 11.71 |  |  |  |  |  |  |  |  |
Outstanding at September 30, 2013 |  |  | 169,565 |  |  | $ | 11.00 |  |  |  | 6.17 |  |  | $ | 1,101,000 |
Exercisable at September 30, 2013 |  |  | 96,026 |  |  | $ | 11.01 |  |  |  | 4.54 |  |  | $ | 622,519 |
Schedule of Share-based Compensation, Activity [Table Text Block] |
Exercise Price |  |  | Shares Under Outstanding Options |  |  | Weighted-Average Remaining Contractual Term |  |  | Shares Under Exercisable Options |
|  |  |  |  |  | (in years) |  |  |  |
$3.84 |  |  | 4,000 |  |  | 0.4 |  |  | 4,000 |
$10.44 |  |  | 25,000 |  |  | 4.4 |  |  | 25,000 |
$10.90 |  |  | 15,000 |  |  | 3.7 |  |  | 15,000 |
$10.90 |  |  | 69,000 |  |  | 8.7 |  |  | 13,800 |
$11.22 |  |  | 30,565 |  |  | 7.2 |  |  | 12,226 |
$11.54 |  |  | 8,000 |  |  | 3.4 |  |  | 8,000 |
$11.75 |  |  | 8,000 |  |  | 2.4 |  |  | 8,000 |
$14.32 |  |  | 10,000 |  |  | 1.4 |  |  | 10,000 |
|  |  | 169,565 |  |  | 6.2 |  |  | 96,026 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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=6415400&loc=d3e5070-113901 + Details
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