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Note 3 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property and equipment, gross	$ 19,229,656	$ 15,641,947
Less Accumulated Depreciation	(8,908,145)	(10,815,995)
Net Property and Equipment	10,321,511	4,825,952
Production Equipment [Member]
Property and equipment, gross	8,599,728	10,228,216
Production Equipment Under Finance Lease [Member]
Property and equipment, gross	4,528,695	1,113,412
Lab Equipment [Member]
Property and equipment, gross	127,560	99,831
Computer Equipment [Member]
Property and equipment, gross	805,001	484,943
Vehicles [Member]
Property and equipment, gross	115,525	143,373
Vehicles Under Finance Lease [Member]
Property and equipment, gross	$ 0	50,815
Furniture and Fixtures [Member]
Useful Life (Year)	5 years
Property and equipment, gross	$ 1,218,386	1,202,155
Furniture and Fixtures Under Finance Lease [Member]
Useful Life (Year)	5 years
Property and equipment, gross	$ 290,505	198,045
Leasehold Improvements [Member]
Property and equipment, gross	3,544,256	2,121,157
Property, Plant and Equipment Not Under Finance Lease [Member]
Less Accumulated Depreciation	(7,518,657)	(9,659,850)
Property, Plant and Equipment Under Finance Lease [Member]
Less Accumulated Depreciation	$ (1,389,488)	$ (1,156,145)
Minimum [Member]
Useful Life (Year)	3 years
Minimum [Member] | Production Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Production Equipment Under Finance Lease [Member]
Useful Life (Year)	3 years
Minimum [Member] | Lab Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Computer Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Vehicles [Member]
Useful Life (Year)	3 years
Minimum [Member] | Vehicles Under Finance Lease [Member]
Useful Life (Year)	3 years
Minimum [Member] | Leasehold Improvements [Member]
Useful Life (Year)	5 years
Maximum [Member]
Useful Life (Year)	10 years
Maximum [Member] | Production Equipment [Member]
Useful Life (Year)	10 years
Maximum [Member] | Production Equipment Under Finance Lease [Member]
Useful Life (Year)	10 years
Maximum [Member] | Lab Equipment [Member]
Useful Life (Year)	10 years
Maximum [Member] | Computer Equipment [Member]
Useful Life (Year)	5 years
Maximum [Member] | Vehicles [Member]
Useful Life (Year)	5 years
Maximum [Member] | Vehicles Under Finance Lease [Member]
Useful Life (Year)	5 years
Maximum [Member] | Leasehold Improvements [Member]
Useful Life (Year)	10 years

X

- Definition

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

+ References

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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.

+ References

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