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Note 5 - Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2021
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | March 31, 2021 |  |  | December 31, 2020 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Remaining |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Remaining |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Weighted |
|  |  |  |  |  |  |  |  |  | Accumulated |  |  | Net |  |  | Average |  |  |  |  |  |  |  |  |  |  | Accumulated |  |  | Net |  |  | Average |
|  | Cost |  |  | Accumulated |  |  | Impairment |  |  | Book |  |  | Amortization |  |  |  |  |  |  | Accumulated |  |  | Impairment |  |  | Book |  |  | Amortization |
|  | Basis |  |  | Amortization |  |  | Charges |  |  | Value |  |  | Period |  |  | Cost |  |  | Amortization |  |  | Charges |  |  | Value |  |  | Period |
Intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete agreements |  | $ | 170 |  |  | $ | (118 | ) |  | $ | — |  |  | $ | 52 |  |  |  | 1.8 |  |  | $ | 170 |  |  | $ | (111 | ) |  | $ | — |  |  | $ | 59 |  |  |  | 2.1 |
Customer relationships |  |  | 15,979 |  |  |  | (7,055 | ) |  |  | (7,592 | ) |  |  | 1,332 |  |  |  | 4.7 |  |  |  | 15,979 |  |  |  | (6,979 | ) |  |  | (7,592 | ) |  |  | 1,408 |  |  |  | 4.9 |
Trade names |  |  | 9,099 |  |  |  | (6,480 | ) |  |  | — |  |  |  | 2,619 |  |  |  | 6.5 |  |  |  | 9,099 |  |  |  | (6,380 | ) |  |  | — |  |  |  | 2,719 |  |  |  | 6.8 |
Intangible assets |  | $ | 25,248 |  |  | $ | (13,653 | ) |  | $ | (7,592 | ) |  | $ | 4,003 |  |  |  | 4.4 |  |  | $ | 25,248 |  |  | $ | (13,470 | ) |  | $ | (7,592 | ) |  | $ | 4,186 |  |  |  | 4.6 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
2021 |  | $ | 550 |
2022 |  |  | 725 |
2023 |  |  | 664 |
2024 |  |  | 661 |
2025 |  |  | 661 |
2026 and thereafter |  |  | 742 |
Total |  | $ | 4,003 |

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