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Note 4 - Goodwill and Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Schedule of Goodwill [Table Text Block] |
Sigma |  | $ | 1,656 |
Thermonics |  |  | 50 |
Ambrell |  |  | 12,032 |
Total |  | $ | 13,738 |
Schedule of Carrying Value of Finite-lived Intangible Assets [Table Text Block] |
Balance - January 1, 2021 |  | $ | 5,711 |
Amortization |  |  | (609 | )
Balance June 30, 2021 |  | $ | 5,102 |
Schedule Of Intangible Assets [Table Text Block] |
|  | June 30, 2021 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 10,480 |  |  | $ | 5,474 |  |  | $ | 5,006 |
Technology |  |  | 600 |  |  |  | 516 |  |  |  | 84 |
Patents |  |  | 590 |  |  |  | 578 |  |  |  | 12 |
Software |  |  | 270 |  |  |  | 270 |  |  |  | - |
Trade name |  |  | 140 |  |  |  | 140 |  |  |  | - |
Total finite-lived intangible assets |  |  | 12,080 |  |  |  | 6,978 |  |  |  | 5,102 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  | 6,710 |  |  |  | - |  |  |  | 6,710 |
Total intangible assets |  | $ | 18,790 |  |  | $ | 6,978 |  |  | $ | 11,812 |
|  | December 31, 2020 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 10,480 |  |  | $ | 4,912 |  |  | $ | 5,568 |
Technology |  |  | 600 |  |  |  | 477 |  |  |  | 123 |
Patents |  |  | 590 |  |  |  | 570 |  |  |  | 20 |
Software |  |  | 270 |  |  |  | 270 |  |  |  | - |
Trade name |  |  | 140 |  |  |  | 140 |  |  |  | - |
Total finite-lived intangible assets |  |  | 12,080 |  |  |  | 6,369 |  |  |  | 5,711 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  | 6,710 |  |  |  | - |  |  |  | 6,710 |
Total intangible assets |  | $ | 18,790 |  |  | $ | 6,369 |  |  | $ | 12,421 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2021 (remainder) |  | $ | 618 |
2022 |  | $ | 1,167 |
2023 |  | $ | 1,067 |
2024 |  | $ | 980 |
2025 |  | $ | 905 |

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