Note 8 - Equity-accounted Investment - Equity-accounted Investment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Total	$ 870,013	$ 684,443	$ 767,321	$ 3,048,219
Balance			11,515,327
Balance	13,324,548		13,324,548
Uranium Royalty Corp [Member]
Share of income (loss) from URC	456,132	684,443	353,440	(8,437)
Gain on ownership interest dilution	413,881		413,881	3,056,656
Total	870,013	$ 684,443	767,321	$ 3,048,219
Balance			11,515,327
Translation gain			1,041,900
Balance	$ 13,324,548		$ 13,324,548