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Note 9 - Share-based Compensation and Employee Benefit Plan (Tables) | 6 Months Ended
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Jun. 30, 2022
Notes Tables |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
Three months ended June 30, 2022: |  | Number of Shares Awarded |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 31, 2022 |  |  | 21,468 |  |  | $ | 6.48 |
Granted |  |  | 2,496 |  |  | $ | 17.25 |
Vested |  |  | (777 | ) |  | $ | 18.55 |
Unvested at June 30, 2022 |  |  | 23,187 |  |  | $ | 7.24 |
Six months ended June 30, 2022: |  |  |  |  |  |  |  |
Unvested at December 31, 2021 |  |  | 21,468 |  |  | $ | 6.48 |
Granted |  |  | 2,496 |  |  | $ | 17.25 |
Vested |  |  | (777 | ) |  | $ | 18.55 |
Unvested at June 30, 2022 |  |  | 23,187 |  |  | $ | 7.24 |
Three months ended June 30, 2021: |  | Number of Shares Awarded |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 31, 2021 |  |  | 17,798 |  |  | $ | 6.88 |
Granted |  |  | 20,476 |  |  | $ | 10.48 |
Vested |  |  | (3,004 | ) |  | $ | 16.90 |
Unvested at June 30, 2021 |  |  | 35,270 |  |  | $ | 8.12 |
Six months ended June 30, 2021: |  |  |  |  |  |  |  |
Unvested at December 31, 2020 |  |  | 18,498 |  |  | $ | 7.29 |
Granted |  |  | 20,476 |  |  | $ | 10.48 |
Vested |  |  | (3,704 | ) |  | $ | 17.08 |
Unvested at June 30, 2021 |  |  | 35,270 |  |  | $ | 8.12 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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