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Note 2 - Discontinued Operations (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total | $ 0 | $ (113,055) | $ 146,252 | $ (1,199,648)
CTI Europe [Member] |  |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total | 0 | (76,000) | 146,000 | 313,000
Ziploc Product Line [Member] | Discontinued Operations [Member] |  |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total | $ 0 | $ (37,000) | $ 0 | $ (1,513,000)

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