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Note 14 - Variable Interest Entities ("VIE") and Transactions (Details Textual) $ in Millions			6 Months Ended	12 Months Ended
	May 31, 2016 USD ($)	May 31, 2016 MXN ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2016
Deconsolidation, Gain (Loss), Amount			$ 219,000	$ (10,014,537)	$ (2,520,616)
Clever Container [Member]
Noncontrolling Interest, Ownership Percentage by Parent							28.50%
Venture Leasing L.L.C [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 1,000,000
Proceeds from Lines of Credit, Total						$ 700,000
Flexo Universal [Member] \| Venture Leasing Mexico S. A. de R. L [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 470,000	$ 8.7
Venture Leasing L.L.C [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage						100.00%
Venture Leasing Mexico S. A. de R. L [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage						100.00%