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Note 1 - Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Accumulated Depreciation and Amortization | $ (24,979) | $ (24,224)
Property and Equipment, Net | $ 6,408 | 5,833
Building [Member] |  |
Estimated useful lives (Year) | 39 years |
Land [Member] |  |
Property and equipment | $ 148 | 148
Leasehold Improvements [Member] | Minimum [Member] |  |
Estimated useful lives (Year) | 3 years |
Leasehold Improvements [Member] | Maximum [Member] |  |
Estimated useful lives (Year) | 15 years |
Building and Leasehold Improvements [Member] |  |
Property and equipment | $ 5,289 | 4,083
Manufacturing Equipment [Member] |  |
Property and equipment | $ 19,128 | 18,892
Manufacturing Equipment [Member] | Minimum [Member] |  |
Estimated useful lives (Year) | 3 years |
Manufacturing Equipment [Member] | Maximum [Member] |  |
Estimated useful lives (Year) | 7 years |
Office and Other Equipment [Member] |  |
Property and equipment | $ 6,822 | $ 6,934
Office and Other Equipment [Member] | Minimum [Member] |  |
Estimated useful lives (Year) | 3 years |
Office and Other Equipment [Member] | Maximum [Member] |  |
Estimated useful lives (Year) | 7 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. + References No definition available. + Details
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