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Note 14 - Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
|  | Number of Shares |  | Weighted Average Fair Value Per Share
Nonvested at January 1, 2014 |  |  | 181,116 |  |  | $ | 10.61 |
Granted |  |  | 61,957 |  |  |  | 9.05 |
Vested |  |  | (73,190 | ) |  |  | 6.88 |
Forfeited |  |  | (20,412 | ) |  |  | 11.66 |
Nonvested at December 31, 2014 |  |  | 149,471 |  |  |  | 11.65 |
Granted |  |  | 978,526 |  |  |  | 4.53 |
Vested |  |  | (166,622 | ) |  |  | 8.56 |
Forfeited |  |  | (47,552 | ) |  |  | 6.91 |
Nonvested at December 31, 2015 |  |  | 913,823 |  |  |  | 4.83 |
Granted |  |  | 79,240 |  |  |  | 4.36 |
Vested |  |  | (351,855 | ) |  |  | 4.46 |
Forfeited |  |  | -- |  |  |  | -- |
Nonvested at December 31, 2016 |  |  | 641,208 |  |  |  | 4.97 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  | Years Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Shares awarded to each non-employee director |  |  | 11,848 |  |  |  | 12,135 |  |  |  | 6,203 |
Total shares awarded |  |  | 59,240 |  |  |  | 60,675 |  |  |  | 43,421 |
Average grant-date market price per share |  | $ | 4.22 |  |  | $ | 4.12 |  |  | $ | 8.06 |
Total compensation cost attributable to shares awarded |  | $ | 250,000 |  |  | $ | 250,000 |  |  | $ | 350,000 |
Compensation cost recognized related to current and prior year awards |  | $ | 249,995 |  |  | $ | 266,667 |  |  | $ | 316,750 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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 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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