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Note 20 - Product and Geographic Segment Data - Financial Information By Product Net Sales (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Net Sales | $ 26,472,568 | $ 32,271,647
Net Sales Percentage | 100.00% | 100.00%
Foil Balloons [Member] |  |
Net Sales | $ 17,061,000 | $ 17,630,000
Net Sales Percentage | 64.00% | 55.00%
Latex Balloons [Member] |  |
Net Sales | $ 4,718,000 | $ 7,409,000
Net Sales Percentage | 18.00% | 23.00%
Film Products [Member] |  |
Net Sales | $ 804,000 | $ 1,883,000
Net Sales Percentage | 3.00% | 6.00%
Other Products [Member] |  |
Net Sales | $ 3,890,000 | $ 5,350,000
Net Sales Percentage | 15.00% | 17.00%

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