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Note 21 - Segment Data (Details Textual) | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Number of Operating Segments | 2 |
Revenue from Contract with Customer, Including Assessed Tax | $ 87,891,000 | $ 87,969,000
International Operation [Member] |  |
Export Sales | 7,239,000 | 4,155,000
Revenues, Total | 40,536,000 | 39,744,000
Long-Lived Assets | 6,669,000 | 7,162,000
Net Assets, Ending Balance | 9,899,000 | 6,495,000
Intersegment Eliminations [Member] |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 0 | $ 0

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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