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Note 13 - Stock-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
2022 |  | $ | 408,000 |
2023 |  | $ | 343,000 |
2024 |  | $ | 334,000 |
2025 |  | $ | 363,000 |
2026 |  | $ | 288,000 |
2027 |  | $ | 111,000 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Restricted Stock |
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |
Nonvested—January 1, 2021 |  |  | 122,070 |  |  | $ | 18.06 |
Granted |  |  | 7,608 |  |  |  | 30.40 |
Canceled/forfeited/expired |  |  | (714 | ) |  |  | 28.23 |
Vested |  |  | (9,358 | ) |  |  | 21.71 |
Nonvested—December 31, 2021: |  |  | 119,606 |  |  | $ | 18.5 |

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