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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Property, Plant and Equipment, Useful Lives [Table Text Block] |
|  | Years |
Buildings |  | 20 | - | 50 |
Machinery and equipment |  | 5 | - | 15 |
Software |  | 3 | - | 5 |
Property, Plant and Equipment [Table Text Block] |
|  | 2023 |  |  | 2022 |
Land |  | $ | 6,214 |  |  | $ | 6,215 |
Buildings |  |  | 121,517 |  |  |  | 119,197 |
Machinery and equipment |  |  | 227,567 |  |  |  | 212,581 |
|  |  | 355,298 |  |  |  | 337,993 |
Less accumulated depreciation |  |  | (220,426 | ) |  |  | (209,353 | )
Property, plant and equipment, net |  | $ | 134,872 |  |  | $ | 128,640 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | Years |
Technology and drawings |  | 13 | - | 20 |
Customer relationships |  | 9 | - | 20 |
Other intangibles |  | 2 | - | 18 |
Schedule of Product Warranty Liability [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Balance at beginning of year |  | $ | 1,973 |  |  | $ | 1,637 |  |  | $ | 1,361 |
Provision |  |  | 3,655 |  |  |  | 1,590 |  |  |  | 1,813 |
Acquired |  |  | - |  |  |  | 646 |  |  |  | - |
Claims |  |  | (3,359 | ) |  |  | (1,900 | ) |  |  | (1,537 | )
Balance at end of year |  | $ | 2,269 |  |  | $ | 1,973 |  |  | $ | 1,637 |

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