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Note 7 - Long-lived Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Property, Plant and Equipment [Table Text Block] |
|  | As of December 31, |  |  |  |  |
|  | 2020 |  |  | 2019 |  |  | Life (in years) |
Land |  | $ | 1,423 |  |  | $ | 1,423 |  |  |  |  |
Buildings |  |  | 20,778 |  |  |  | 20,747 |  |  |  | 39 |
Machinery and equipment |  |  | 113,266 |  |  |  | 109,775 |  |  |  | 2 - 10 |
Office furniture and equipment |  |  | 5,099 |  |  |  | 4,597 |  |  |  | 3 - 7 |
Leasehold improvements |  |  | 9,305 |  |  |  | 8,974 |  |  | Shorter of asset life or life of lease |
Construction in progress |  |  | 502 |  |  |  | 1,093 |  |  |  |  |
|  |  | 150,373 |  |  |  | 146,609 |  |  |  |  |
Less accumulated depreciation and amortization |  |  | (105,178 | ) |  |  | (99,669 | ) |  |  |  |
Total property and equipment |  | $ | 45,195 |  |  | $ | 46,940 |  |  |  |  |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, 2020 |  |  | December 31, 2019 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 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 |  |  | $ | (111 | ) |  | $ | — |  |  | $ | 59 |  |  |  | 2.1 |  |  | $ | 170 |  |  | $ | (83 | ) |  | $ | — |  |  | $ | 87 |  |  |  | 3.1 |
Customer relationships |  |  | 15,979 |  |  |  | (6,979 | ) |  |  | (7,592 | ) |  |  | 1,408 |  |  |  | 4.9 |  |  |  | 15,979 |  |  |  | (6,674 | ) |  |  | (7,592 | ) |  |  | 1,713 |  |  |  | 5.8 |
Trade names |  |  | 9,099 |  |  |  | (6,380 | ) |  |  | — |  |  |  | 2,719 |  |  |  | 6.8 |  |  |  | 9,099 |  |  |  | (5,980 | ) |  |  | — |  |  |  | 3,119 |  |  |  | 7.8 |
Intangible assets |  | $ | 25,248 |  |  | $ | (13,470 | ) |  | $ | (7,592 | ) |  | $ | 4,186 |  |  |  | 4.6 |  |  | $ | 25,248 |  |  | $ | (12,737 | ) |  | $ | (7,592 | ) |  | $ | 4,919 |  |  |  | 6.5 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2021 |  | $ | 733 |
2022 |  |  | 725 |
2023 |  |  | 664 |
2024 |  |  | 661 |
2025 |  |  | 661 |
2026 and thereafter |  |  | 742 |
Total |  | $ | 4,186 |

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