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Note 6 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Changes in Goodwill [Table Text Block] |
Balance - January 1, 2021 |  | $ | 13,738 |
Acquisition of Z-Sciences |  |  | 111 |
Acquisition of Videology |  |  | 4,596 |
Acquisition of Acculogic |  |  | 2,912 |
Impact of foreign currency translation adjustments |  |  | 91 |
Balance - December 31, 2021 |  | $ | 21,448 |
Schedule of Goodwill [Table Text Block] |
|  | December 31, |
|  | 2021 |  |  | 2020 |
Thermal Segment: |  |  |  |  |  |  |  |
Sigma |  | $ | 1,656 |  |  | $ | 1,656 |
Thermonics |  |  | 50 |  |  |  | 50 |
Ambrell |  |  | 12,032 |  |  |  | 12,032 |
Z-Sciences |  |  | 111 |  |  |  | - |
Videology |  |  | 4,544 |  |  |  | - |
Total Thermal Segment |  |  | 18,393 |  |  |  | 13,738 |
EMS Segment: |  |  |  |  |  |  |  |
Acculogic |  |  | 3,055 |  |  |  | - |
Total Goodwill |  | $ | 21,448 |  |  | $ | 13,738 |
Schedule of Indefinite-Lived Intangible Assets [Table Text Block] |
Balance - January 1, 2021 |  |  | 6,710 |
Acquisition of Videology |  |  | 850 |
Acquisition of Acculogic |  |  | 878 |
Impact of foreign currency translation adjustments |  |  | (10 | )
Balance - December 31, 2021 |  | $ | 8,428 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
Balance - January 1, 2020 |  | $ | 6,944 |
Amortization |  |  | (1,233 | )
Balance - December 31, 2020 |  |  | 5,711 |
Acquisition of Z-Sciences |  |  | 389 |
Acquisition of Videology |  |  | 4,396 |
Acquisition of Acculogic |  |  | 4,196 |
Impact of foreign currency translation adjustments |  |  | (46 | )
Amortization |  |  | (1,440 | )
Balance - December 31, 2021 |  | $ | 13,206 |
Schedule Of Intangible Assets [Table Text Block] |
|  | December 31, 2021 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 16,544 |  |  | $ | 6,160 |  |  | $ | 10,384 |
Technology |  |  | 2,950 |  |  |  | 569 |  |  |  | 2,381 |
Patents |  |  | 590 |  |  |  | 585 |  |  |  | 5 |
Backlog |  |  | 521 |  |  |  | 85 |  |  |  | 436 |
Software |  |  | 270 |  |  |  | 270 |  |  |  | - |
Trade name |  |  | 140 |  |  |  | 140 |  |  |  | - |
Total finite-lived intangible assets |  |  | 21,015 |  |  |  | 7,809 |  |  |  | 13,206 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  | 8,428 |  |  |  | - |  |  |  | 8,428 |
Total intangible assets |  | $ | 29,443 |  |  | $ | 7,809 |  |  | $ | 21,634 |
|  | 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] |
2022 |  | $ | 2,720 |
2023 |  | $ | 2,132 |
2024 |  | $ | 2,007 |
2025 |  | $ | 1,793 |
2026 |  | $ | 1,182 |

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