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Note 1 - Operations and Summary of Significant Accounting Policies - Property, Plant and Equipment Useful Life (Details)	Jun. 30, 2024
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment useful life (Year)	5 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment useful life (Year)	40 years
Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment useful life (Year)	5 years
Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment useful life (Year)	20 years
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)	5 years