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Note 20 - Product and Geographic Segment Data - Financial Information By Product Net Sales (Details) - USD ($)
12 Months Ended
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%