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Note 5 - Share-based Compensation and Employee Benefit Plan (Tables) | 6 Months Ended
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Jun. 30, 2017
Notes Tables |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
Three months ended June 30, 2017: |  | Number of Shares Awarded |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 31, 2017 |  |  | 33,033 |  |  | $ | 12.55 |
Granted |  |  | 5,084 |  |  | $ | 15.05 |
Forfeited |  |  | (6,000 | ) |  | $ | 15.50 |
Unvested at June 30, 2017 |  |  | 32,117 |  |  | $ | 12.39 |
Six months ended June 30, 2017: |  |  |  |  |  |  |  |
Unvested at December 31, 2016 |  |  | 35,264 |  |  | $ | 12.84 |
Granted |  |  | 5,084 |  |  | $ | 15.05 |
Vested |  |  | (2,231 | ) |  | $ | 13.05 |
Forfeited |  |  | (6,000 | ) |  | $ | 15.50 |
Unvested at June 30, 2017 |  |  | 32,117 |  |  | $ | 12.39 |
Three months ended June 30, 2016: |  | Number of Shares Awarded |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 31, 2016 |  |  | 113,938 |  |  | $ | 14.06 |
Vested |  |  | (2,526 | ) |  | $ | 14.72 |
Forfeited |  |  | (4,213 | ) |  | $ | 11.31 |
Unvested at June 30, 2016 |  |  | 107,199 |  |  | $ | 14.16 |
Six months ended June 30, 2016: |  |  |  |  |  |  |  |
Unvested at December 31, 2015 |  |  | 55,854 |  |  | $ | 12.83 |
Granted |  |  | 58,084 |  |  | $ | 15.25 |
Vested |  |  | (2,526 | ) |  | $ | 14.72 |
Forfeited |  |  | (4,213 | ) |  | $ | 11.31 |
Unvested at June 30, 2016 |  |  | 107,199 |  |  | $ | 14.16 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- References No definition available. + Details
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