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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 |

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