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v3.26.1

Note 4 - Supplemental Balance Sheet Information (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2026
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2026 |  |  | 2025 |
Raw materials |  | $ | 46,516 |  |  | $ | 42,150 |
Work in process |  |  | 6,010 |  |  |  | 4,045 |
Finished goods |  |  | 6,219 |  |  |  | 7,813 |
Total |  | $ | 58,745 |  |  | $ | 54,008 |
Property, Plant, and Equipment [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2026 |  |  | 2025 |
Land |  | $ | 4,693 |  |  | $ | 4,693 |
Buildings and leasehold improvements |  |  | 30,878 |  |  |  | 30,179 |
Machinery and equipment |  |  | 65,383 |  |  |  | 63,556 |
Furniture and fixtures |  |  | 3,240 |  |  |  | 3,195 |
Computer hardware and software |  |  | 9,413 |  |  |  | 8,164 |
Construction in process |  |  | 762 |  |  |  | 3,129 |
|  |  | 114,369 |  |  |  | 112,916 |
Less: Accumulated depreciation |  |  | (74,855 | ) |  |  | (72,519 | )
Property, plant and equipment, net |  | $ | 39,514 |  |  | $ | 40,397 |
Schedule of Depreciation Expense [Table Text Block] |
|  | Three-month period ended |  |  | Six-month period ended |
|  | June 30, |  |  | June 30, |  |  | June 30, |  |  | June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Depreciation expense |  | $ | 1,056 |  |  | $ | 1,008 |  |  | $ | 2,110 |  |  | $ | 1,958 |
Goodwill [Table Text Block] |
|  | Battery & Energy |  |  | Communications |  |  |  |  |
|  | Products |  |  | Systems |  |  | Total |
Balance – December 31, 2025 |  | $ | 33,883 |  |  | $ | 11,493 |  |  | $ | 45,376 |
Effect of foreign currency translation |  |  | (7 | ) |  |  | - |  |  |  | (7 | )
Balance – June 30, 2026 |  | $ | 33,876 |  |  | $ | 11,493 |  |  | $ | 45,369 |
Intangible Asset, Finite-Lived [Table Text Block] |
|  | at June 30, 2026 |
|  |  |  |  |  | Accumulated |  |  |  |  |
|  | Cost |  |  | Amortization |  |  | Net |
Customer relationships |  | $ | 18,291 |  |  | $ | 8,809 |  |  | $ | 9,482 |
Patents and technology |  |  | 5,746 |  |  |  | 5,637 |  |  |  | 109 |
Other |  |  | 1,500 |  |  |  | 705 |  |  |  | 795 |
Total other intangible assets |  | $ | 25,537 |  |  | $ | 15,151 |  |  | $ | 10,386 |
|  | at December 31, 2025 |
|  |  |  |  |  | Accumulated |  |  |  |  |
|  | Cost |  |  | Amortization |  |  | Net |
Customer relationships |  | $ | 18,333 |  |  | $ | 8,360 |  |  | $ | 9,973 |
Patents and technology |  |  | 5,762 |  |  |  | 5,635 |  |  |  | 127 |
Other |  |  | 1,500 |  |  |  | 667 |  |  |  | 833 |
Total other intangible assets |  | $ | 25,595 |  |  | $ | 14,662 |  |  | $ | 10,933 |
Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] |
|  | Three-month period ended |  |  | Six-month period ended |
|  | June 30, |  |  | June 30, |  |  | June 30, |  |  | June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Amortization included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  | $ | 263 |  |  | $ | 378 |  |  | $ | 525 |  |  | $ | 754 |
Research and development |  |  | 5 |  |  |  | 32 |  |  |  | 10 |  |  |  | 61 |
Total amortization expense |  | $ | 268 |  |  | $ | 410 |  |  | $ | 535 |  |  | $ | 815 |

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