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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 |  |  |

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