Note 2 - Summary of Significant Accounting Policies - Property and Equipment Useful Life (Details)	6 Months Ended
	Jun. 30, 2022
Furniture and Fixtures [Member]
Property and Equipment, Useful Life (Year)	5 years
Equipment [Member]
Property and Equipment, Useful Life (Year)	7 years
Building Improvements [Member]
Property and Equipment, Useful Life (Year)	15 years
Building [Member]
Property and Equipment, Useful Life (Year)	27 years 6 months