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Note 2 - Summary of Significant Accounting Policies - Long-lived Assets Valuation (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment, Gross	$ 45,939,840	$ 46,390,570
Accumulated depreciation	(21,599,100)	(21,041,551)
Net book value	24,340,740	25,349,019
Re-Tain Assets [Member]
Property, Plant and Equipment, Gross	25,235,331
Accumulated depreciation	(9,775,788)
Net book value	15,459,543
Land [Member]
Property, Plant and Equipment, Gross	516,867	516,867
Land [Member] | Re-Tain Assets [Member]
Property, Plant and Equipment, Gross	448,201
Building and Building Improvements [Member]
Property, Plant and Equipment, Gross	20,960,522	20,889,395
Building and Building Improvements [Member] | Re-Tain Assets [Member]
Property, Plant and Equipment, Gross	12,725,789
Laboratory and Manufacturing Equipment [Member]
Property, Plant and Equipment, Gross	20,888,337	21,234,259
Laboratory and Manufacturing Equipment [Member] | Re-Tain Assets [Member]
Property, Plant and Equipment, Gross	9,744,390
Construction in Progress [Member]
Property, Plant and Equipment, Gross	2,645,564	$ 2,693,904
Construction in Progress [Member] | Re-Tain Assets [Member]
Property, Plant and Equipment, Gross	$ 2,316,951

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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