Note 2 - Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Details) |
12 Months Ended |
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Dec. 31, 2021 | |
| Minimum [Member] | Building [Member] | |
| Property, plant and equipment, useful life (Year) | 10 years |
| Minimum [Member] | Plant and Equipment [Member] | |
| Property, plant and equipment, useful life (Year) | 3 years |
| Minimum [Member] | Furniture, Fixtures and Leasehold Improvements [Member] | |
| Property, plant and equipment, useful life (Year) | 5 years |
| Maximum [Member] | Building [Member] | |
| Property, plant and equipment, useful life (Year) | 40 years |
| Maximum [Member] | Plant and Equipment [Member] | |
| Property, plant and equipment, useful life (Year) | 30 years |
| Maximum [Member] | Furniture, Fixtures and Leasehold Improvements [Member] | |
| Property, plant and equipment, useful life (Year) | 20 years |
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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