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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
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] |
|  | 2019 |  |  | 2018 |
Land |  | $ | 4,998 |  |  | $ | 3,869 |
Buildings |  |  | 110,162 |  |  |  | 106,940 |
Machinery and equipment |  |  | 182,922 |  |  |  | 177,668 |
|  |  | 298,082 |  |  |  | 288,477 |
Less accumulated depreciation |  |  | (186,303 | ) |  |  | (174,984 | )
Property, plant and equipment, net |  | $ | 111,779 |  |  | $ | 113,493 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | Years |
Technology and drawings |  |  | 13 | - | 20 |
Customer relationships |  |  | 9 | - | 15 |
Other intangibles |  |  | 2 | - | 18 |
Schedule of Product Warranty Liability [Table Text Block] |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Balance at beginning of year |  | $ | 1,380 |  |  | $ | 1,098 |  |  | $ | 1,435 |
Provision |  |  | 1,747 |  |  |  | 1,689 |  |  |  | 1,377 |
Claims |  |  | (1,689 | ) |  |  | (1,407 | ) |  |  | (1,714 | )
Balance at end of year |  | $ | 1,438 |  |  | $ | 1,380 |  |  | $ | 1,098 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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