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Note 2 - Summary of Significant Accounting Policies - Estimated Useful Lives for Buildings, Improvements, Furniture, Vehicles, and Equipment (Details)	12 Months Ended
	Dec. 31, 2022
Leasehold Improvements [Member] \| Minimum [Member]
Estimated useful life (Year)	5 years
Leasehold Improvements [Member] \| Maximum [Member]
Estimated useful life (Year)	10 years
Equipment [Member] \| Minimum [Member]
Estimated useful life (Year)	3 years
Equipment [Member] \| Maximum [Member]
Estimated useful life (Year)	10 years