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Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property and equipment, gross	$ 16,413,799	$ 19,229,656
Less Accumulated Depreciation	(7,554,803)	(8,908,145)
Net Property and Equipment	8,858,993	10,321,511
Production Equipment [Member]
Property and equipment, gross	7,425,145	8,599,728
Production Equipment Under Finance Lease [Member]
Property and equipment, gross	3,066,623	4,528,695
Lab Equipment [Member]
Property and equipment, gross	117,770	127,560
Computer Equipment [Member]
Property and equipment, gross	1,005,223	805,001
Vehicles [Member]
Property and equipment, gross	90,819	115,525
Vehicles Under Finance Lease [Member]
Property and equipment, gross
Furniture and Fixtures [Member]
Useful Life (Year)	5 years
Property and equipment, gross	$ 1,166,071	1,218,386
Furniture and Fixtures Under Finance Lease [Member]
Useful Life (Year)	5 years
Property and equipment, gross	$ 268,208	290,505
Leasehold Improvements [Member]
Property and equipment, gross	3,273,940	3,544,256
Property, Plant and Equipment Not Under Finance Lease [Member]
Less Accumulated Depreciation	(7,218,468)	(7,518,657)
Property, Plant and Equipment Under Finance Lease [Member]
Less Accumulated Depreciation	$ (336,338)	$ (1,389,488)
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.

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