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Note 3 - Revenues (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Year Ended December 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Instruments, equipment, software and accessories |  | $ | 86,964 |  |  | $ | 105,716 |
Service, maintenance and warranty contracts |  |  | 7,171 |  |  |  | 6,534 |
Total revenues |  | $ | 94,135 |  |  | $ | 112,250 |
|  | Year Ended December 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Goods and services transferred at a point in time |  | $ | 90,420 |  |  | $ | 108,558 |
Goods and services transferred over time |  |  | 3,715 |  |  |  | 3,692 |
Total revenues |  | $ | 94,135 |  |  | $ | 112,250 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Year Ended December 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Americas |  |  |  |  |  |  |  |
United States |  | $ | 41,738 |  |  | $ | 48,205 |
Americas - Other |  |  | 3,596 |  |  |  | 3,517 |
Europe, Middle East and Africa |  |  | 28,405 |  |  |  | 33,275 |
Asia |  |  |  |  |  |  |  |
Greater China |  |  | 13,297 |  |  |  | 18,488 |
Asia - Other |  |  | 7,099 |  |  |  | 8,765 |
|  | $ | 94,135 |  |  | $ | 112,250 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | December 31, |  |  | Change |
(in thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |  |  | 2024 vs. 2023 |  |  | 2023 vs. 2022 |
Service, maintenance and warranty contracts |  | $ | 2,366 |  |  | $ | 2,849 |  |  | $ | 1,530 |  |  | $ | (483 | ) |  | $ | 1,319 |
Customer advances |  |  | 1,440 |  |  |  | 1,659 |  |  |  | 1,840 |  |  |  | (219 | ) |  |  | (181 | )
Total contract liabilities |  | $ | 3,806 |  |  | $ | 4,508 |  |  | $ | 3,370 |  |  | $ | (702 | ) |  | $ | 1,138 |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Balance, beginning of period |  | $ | 160 |  |  | $ | 191 |
Provision for expected credit losses |  |  | 60 |  |  |  | 29 |
Charge-offs and other |  |  | (5 | ) |  |  | (60 | )
Balance, end of period |  | $ | 215 |  |  | $ | 160 |
Schedule of Product Warranty Liability [Table Text Block] |
|  | Year Ended December 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Balance, beginning of period |  | $ | 336 |  |  | $ | 268 |
Provision for warranties |  |  | 317 |  |  |  | 381 |
Warranty claims |  |  | (335 | ) |  |  | (313 | )
Balance, end of period |  | $ | 318 |  |  | $ | 336 |

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