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Note 5 - Balance Sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
Inventories: |  | December 31, |
(in thousands) |  | 2021 |  |  | 2020 |
Finished goods |  | $ | 5,646 |  |  | $ | 4,938 |
Work in process |  |  | 3,410 |  |  |  | 3,513 |
Raw materials |  |  | 18,531 |  |  |  | 13,811 |
Total |  | $ | 27,587 |  |  | $ | 22,262 |
Property, Plant and Equipment [Table Text Block] |
Property, Plant and Equipment: |  | December 31, |
(in thousands) |  | 2021 |  |  | 2020 |
Machinery and equipment |  | $ | 7,698 |  |  | $ | 7,450 |
Computer equipment and software |  |  | 6,269 |  |  |  | 9,114 |
Leasehold improvements |  |  | 2,560 |  |  |  | 2,540 |
Furniture and fixtures |  |  | 1,296 |  |  |  | 1,353 |
Automobiles |  |  | 41 |  |  |  | 100 |
|  |  | 17,864 |  |  |  | 20,557 |
Less: accumulated depreciation |  |  | (14,449 | ) |  |  | (16,597 | )
Property, plant and equipment, net |  | $ | 3,415 |  |  | $ | 3,960 |
Other Current Liabilities [Table Text Block] |
Other Current Liabilities: |  | December 31, |
(in thousands) |  | 2021 |  |  | 2020 |
Compensation |  | $ | 6,048 |  |  |  | 3,715 |
Professional fees |  |  | 480 |  |  |  | 432 |
Warranty costs |  |  | 240 |  |  |  | 185 |
Customer related costs |  |  | 2,265 |  |  |  | 1,093 |
Accrued income taxes |  |  | 224 |  |  |  | 286 |
Other |  |  | 1,505 |  |  |  | 1,767 |
Total |  | $ | 10,762 |  |  | $ | 7,478 |

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