Note 2 - Significant Accounting Policies - Useful Lives of Property Plant and Equipment (Details)	12 Months Ended
	Jun. 30, 2022
Computer Equipment [Member]
Property Plant and Equipment, Useful Life (Year)	3 years
Assets Held under Capital Leases [Member]
Property Plant and Equipment, Useful Life (Year)	3 years
Long Term Use Equipment [Member]
Property Plant and Equipment, Useful Life (Year)	10 years
Minimum [Member] | Furniture and Fixtures [Member]
Property Plant and Equipment, Useful Life (Year)	5 years
Maximum [Member] | Furniture and Fixtures [Member]
Property Plant and Equipment, Useful Life (Year)	7 years