Note 9 - Long-term Debt - Long-term Debt (Details) - USD ($)	Oct. 31, 2019	Jul. 31, 2019
Long-term Debt, Gross	$ 20,000,000	$ 20,000,000
Unamortized discount and accrued fees	32,184	(400,037)
	$ 20,032,184	$ 19,599,963