Note 5 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Gross	$ 3,999,804	$ 4,018,803
Less: accumulated depreciation and amortization	(3,676,488)	(3,630,731)
Property and equipment, net	323,316	388,072
Air Transportation Equipment [Member]
Property, Plant and Equipment, Gross	$ 56,000	56,000
Air Transportation Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years
Air Transportation Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	12 years
Vehicles [Member]
Property, Plant and Equipment, Gross	$ 396,483	467,972
Vehicles [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Vehicles [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Office Equipment [Member]
Property, Plant and Equipment, Gross	$ 452,520	409,260
Office Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Office Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years
Tools, Dies and Molds [Member]
Property, Plant and Equipment, Gross	$ 81,847	81,847
Tools, Dies and Molds [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Tools, Dies and Molds [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	$ 2,812,594	2,803,724
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Building [Member]
Property, Plant and Equipment, Gross	$ 200,000	$ 200,000
Building [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years
Building [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	17 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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