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Note 11 - Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure Text Block Supplement [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Beginning |  |  | Granted |  |  | Exercised |  |  | Canceled |  |  | Ending |  |  |  |  |
|  | Balance |  |  | During |  |  | During |  |  | During |  |  | Balance |  |  |  |  |
|  | Outstanding |  |  | Period |  |  | Period |  |  | Period |  |  | Outstanding |  |  | Exercisable |
Year ended December 31, 2012 Number of shares |  |  | 102,000 |  |  |  | -0- |  |  |  | 60,100 |  |  |  | 0 |  |  |  | 41,900 |  |  |  | 41,900 |
Weighted average exercise price Per share |  | $ | 4.35 |  |  |  | -0- |  |  |  | -0- |  |  |  | -0- |  |  | $ | 4.82 |  |  | $ | 4.82 |
Year ended December 31, 2013 Number of shares |  |  | 41,900 |  |  |  | -0- |  |  |  | 6,650 |  |  |  | -0- |  |  |  | 35,250 |  |  |  | 35,250 |
Weighted average exercise price Per share |  | $ | 4.82 |  |  |  | -0- |  |  |  | -0- |  |  |  | -0- |  |  | $ | 4.62 |  |  | $ | 4.62 |
|  | Beginning |  |  | Granted |  |  | Exercised |  |  | Canceled |  |  | Ending |  |  |  |  |
|  | Balance |  |  | During |  |  | During |  |  | During |  |  | Balance |  |  |  |  |
|  | Outstanding |  |  | Period |  |  | Period |  |  | Period |  |  | Outstanding |  |  | Exercisable |
Year ended December 31, 2012 Number of shares |  |  | 170,590 |  |  |  | -0- |  |  |  | 8,110 |  |  |  | -0- |  |  |  | 162,480 |  |  |  | 124,980 |
Weighted average exercise price Per share |  | $ | 4.41 |  |  |  | -0- |  |  |  | -0- |  |  |  | -0- |  |  | $ | 4.35 |  |  | $ | 4.27 |
Year ended December 31, 2013 Number of shares |  |  | 162,480 |  |  |  | -0- |  |  |  | 10,000 |  |  |  | -0- |  |  |  | 152,480 |  |  |  | 127,480 |
Weighted average exercise price Per share |  | $ | 4.35 |  |  |  | -0- |  |  |  | -0- |  |  |  | -0- |  |  | $ | 4.40 |  |  | $ | 4.35 |
|  | Beginning |  |  | Granted |  |  | Exercised |  |  | Canceled |  |  | Ending |  |  |  |  |
|  | Balance |  |  | During |  |  | During |  |  | During |  |  | Balance |  |  |  |  |
|  | Outstanding |  |  | Period |  |  | Period |  |  | Period |  |  | Outstanding |  |  | Exercisable |
Year ended December 31, 2012 Number of shares |  |  | 200 |  |  |  | -0- |  |  |  | -0- |  |  |  | -0- |  |  |  | 200 |  |  |  | 200 |
Weighted average exercise price Per share |  | $ | 11.51 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 11.51 |  |  | $ | 11.51 |
Year ended December 31, 2013 Number of shares |  |  | 200 |  |  |  | -0- |  |  |  | -0- |  |  |  | 200 |  |  |  | -0- |  |  |  | -0- |
Weighted average exercise price Per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|  |  |  |  |  |  | Options Outstanding |  |  |  |  |  |  |  |  |  |  | Options Exercisable |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  | Weighted |  |  | Weighted |  |  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  | Average |  |  | Average |  |  |  |  |  |  |  |  |  |  | Average |  |  |  |  |
| Exercise |  |  | Number |  |  | Remaining |  |  | Exercise |  |  | Intrinsic |  |  | Number |  |  | Exercise |  |  | Intrinsic |
| Price Range |  |  | Outstanding |  |  | Contractual |  |  | Price |  |  | Value |  |  | Exercisable |  |  | Price |  |  | Value |
| $ | 3.00 | - | 3.99 |  |  |  | 62,000 |  |  |  | 3.95 |  |  | $ | 3.65 |  |  | $ | 675,180 |  |  |  | 62,000 |  |  | $ | 3.65 |  |  | $ | 675,180 |
| $ | 4.00 | - | 4.49 |  |  |  | 15,930 |  |  |  | 6.04 |  |  | $ | 4.25 |  |  | $ | 163,920 |  |  |  | 15,930 |  |  | $ | 4.25 |  |  | $ | 163,920 |
| $ | 4.50 | - | 4.99 |  |  |  | 100,000 |  |  |  | 3.78 |  |  | $ | 4.62 |  |  | $ | 992,000 |  |  |  | 75,000 |  |  | $ | 4.62 |  |  | $ | 744,000 |
| $ | 5.00 | - | 7.99 |  |  |  | 9,800 |  |  |  | 7.04 |  |  | $ | 7.90 |  |  | $ | 65,072 |  |  |  | 9,800 |  |  | $ | 7.90 |  |  | $ | 65,072 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average Grant |
|  | Shares of |  |  | Date Fair |
|  | Restricted Stock |  |  | Value |
Unvested outstanding at January 1, 2012 |  |  | 20,000 |  |  | $ | 10.97 |
Granted |  |  | 8,000 |  |  | $ | 12.32 |
Vested |  |  | (12,000 | ) |  | $ | 11.87 |
Forfeited/Cancelled |  |  | - |  |  |  |  |
Unvested outstanding at December 31, 2012 |  |  | 16,000 |  |  | $ | 10.97 |
Granted |  |  | 7,800 |  |  | $ | 10.16 |
Vested |  |  | (11,800 | ) |  | $ | 10.43 |
Forfeited/Cancelled |  |  | - |  |  |  |  |
Unvested outstanding at December 31, 2013 |  |  | 12,000 |  |  | $ | 10.97 |
|  |  |  |  |  | Weighted |
|  | Shares of |  |  | Average Grant |
|  | Restricted |  |  | Date Fair |
|  | Stock Units |  |  | Value |
Unvested outstanding at January 1, 2012 |  |  | 35,300 |  |  | $ | 7.19 |
Granted |  |  | 7,125 |  |  | $ | 11.95 |
Vested |  |  | (11,850 | ) |  | $ | 7.22 |
Forfeited/Cancelled |  |  | - |  |  |  |  |
Unvested outstanding at December 31, 2012 |  |  | 30,575 |  |  | $ | 8.29 |
Granted |  |  | 133,955 |  |  | $ | 11.66 |
Vested |  |  | (20,287 | ) |  | $ | 9.38 |
Forfeited/Cancelled |  |  | - |  |  |  |  |
Unvested outstanding at December 31, 2013 |  |  | 144,243 |  |  | $ | 11.26 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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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=6415400&loc=d3e5070-113901 + 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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