Note 19 - Income Taxes - Reconciliation of Income Tax (Details)	12 Months Ended
	Jul. 31, 2022	Jun. 30, 2022	Jul. 31, 2021	Jun. 30, 2021	Jul. 31, 2020	Jun. 30, 2020
Federal income tax provision rate	21.00%		21.00%		21.00%
State income tax provision rate, net of federal income tax effect	2.95%		0.83%		0.72%
Total income tax provision rate	23.95%	23.95%	21.83%	21.83%	21.72%	21.72%