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Note 16 - Commitments (Details Textual)
1 Months Ended 12 Months Ended
Mar. 01, 2017
USD ($)
Mar. 01, 2017
MXN ($)
Nov. 30, 2016
USD ($)
ft²
Aug. 31, 2015
USD ($)
ft²
Aug. 31, 2011
USD ($)
ft²
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2012
a
Operating Leases, Rent Expense, Net, Total | $           $ 1,400,000 $ 1,400,000  
Warehouse and Office Space in Lake Zurich, Illinois [Member]                
Area of Real Estate Property | a               118,000
Lessee, Operating Lease, Renewal Term 3 years 3 years            
CTI Balloons Limited [Member] | Warehouse and Office Space in Rugby, England [Member]                
Lessee, Operating Lease, Term of Contract       5 years        
Area of Real Estate Property | ft²       9,000        
Operating Lease, Monthly Rent | $       $ 6,000        
CTI Europe [Member] | Office and Warehouse Space in Heusenstamm, Germany [Member]                
Area of Real Estate Property | ft²     13,000          
Operating Lease, Monthly Rent | $     $ 9,000          
Flexo Universal [Member] | Warehouse and Office Space in Guadalajara, Mexico [Member]                
Lessee, Operating Lease, Term of Contract 5 years 5 years     5 years      
Area of Real Estate Property | ft²         73,000      
Operating Lease, Monthly Rent $ 26,000 $ 493,090     $ 22,000