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v3.23.3

Note 4 - Supplemental Balance Sheet Information (Tables) | 9 Months Ended
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Sep. 30, 2023
Notes Tables |
Cash, Cash Equivalents and Investments [Table Text Block] |
|  | September 30, 2023 |  |  | December 31, 2022 |
Cash |  | $ | 9,223 |  |  | $ | 5,634 |
Restricted cash |  |  | 78 |  |  |  | 79 |
Total |  | $ | 9,301 |  |  | $ | 5,713 |
Schedule of Inventory, Current [Table Text Block] |
|  | September 30, 2023 |  |  | December 31, 2022 |
Raw materials |  | $ | 31,516 |  |  | $ | 29,200 |
Work in process |  |  | 4,342 |  |  |  | 2,757 |
Finished goods |  |  | 10,776 |  |  |  | 9,235 |
Total |  | $ | 46,634 |  |  | $ | 41,192 |
Property, Plant and Equipment [Table Text Block] |
|  | September 30, 2023 |  |  | December 31, 2022 |
Land |  | $ | 1,273 |  |  | $ | 1,273 |
Buildings and leasehold improvements |  |  | 15,934 |  |  |  | 15,572 |
Machinery and equipment |  |  | 57,164 |  |  |  | 63,981 |
Furniture and fixtures |  |  | 2,822 |  |  |  | 2,845 |
Computer hardware and software |  |  | 7,807 |  |  |  | 7,744 |
Construction in process |  |  | 1,709 |  |  |  | 1,245 |
|  |  | 86,709 |  |  |  | 92,660 |
Less: Accumulated depreciation |  |  | (65,543 | ) |  |  | (70,944 | )
Property, plant and equipment, net |  | $ | 21,166 |  |  | $ | 21,716 |
|  | Three-month period ended |  |  | Nine-month period ended |
|  | September 30, 2023 |  |  | September 30, 2022 |  |  | September 30, 2023 |  |  | September 30, 2022 |
Depreciation expense |  | $ | 760 |  |  | $ | 815 |  |  | $ | 2,282 |  |  | $ | 2,450 |
Schedule of Goodwill [Table Text Block] |
|  | Battery & Energy Products |  |  | Communications Systems |  |  | Total |
Balance – December 31, 2022 |  | $ | 25,935 |  |  | $ | 11,493 |  |  | $ | 37,428 |
Effect of foreign currency translation |  |  | (71 | ) |  |  | - |  |  |  | (71 | )
Balance – September 30, 2023 |  | $ | 25,864 |  |  | $ | 11,493 |  |  | $ | 37,357 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | at September 30, 2023 |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Customer relationships |  | $ | 12,989 |  |  | $ | 6,451 |  |  | $ | 6,538 |
Patents and technology |  |  | 5,564 |  |  |  | 5,260 |  |  |  | 304 |
Trade names |  |  | 4,632 |  |  |  | 607 |  |  |  | 4,025 |
Trademarks |  |  | 3,399 |  |  |  | - |  |  |  | 3,399 |
Other |  |  | 1,500 |  |  |  | 496 |  |  |  | 1,004 |
Total other intangible assets |  | $ | 28,084 |  |  | $ | 12,814 |  |  | $ | 15,270 |
|  | at December 31, 2022 |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Customer relationships |  | $ | 12,970 |  |  | $ | 5,992 |  |  | $ | 6,978 |
Patents and technology |  |  | 5,557 |  |  |  | 5,171 |  |  |  | 386 |
Trade names |  |  | 4,629 |  |  |  | 522 |  |  |  | 4,107 |
Trademarks |  |  | 3,404 |  |  |  | - |  |  |  | 3,404 |
Other |  |  | 1,500 |  |  |  | 454 |  |  |  | 1,046 |
Total other intangible assets |  | $ | 28,060 |  |  | $ | 12,139 |  |  | $ | 15,921 |
Finite-Lived Intangible Assets Amortization Expense [Table Text Block] |
|  | Three-month period ended |  |  | Nine-month period ended |
|  | September 30, 2023 |  |  | September 30, 2022 |  |  | September 30, 2023 |  |  | September 30, 2022 |
Amortization included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  | $ | 203 |  |  | $ | 295 |  |  | $ | 591 |  |  | $ | 895 |
Research and development |  |  | 24 |  |  |  | 23 |  |  |  | 72 |  |  |  | 74 |
Total amortization expense |  | $ | 227 |  |  | $ | 318 |  |  | $ | 663 |  |  | $ | 969 |

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