Note 7 - Equity-accounted Investment - Equity-accounted Investment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Total	$ 600,913	$ 2,704,373	$ (102,692)	$ 2,363,776
Balance, July 31, 2020			11,515,327
Balance, January 31, 2021	11,961,434		11,961,434
Uranium Royalty Corp [Member]
Share of income (loss) from URC	600,913	(23,653)	(102,692)	(692,880)
Gain on ownership interest dilution		2,728,026		3,056,656
Total	600,913	2,704,373	(102,692)	2,363,776
Balance, July 31, 2020			11,515,327
Share of income (loss) from URC	600,913	$ (23,653)	(102,692)	$ (692,880)
Translation gain			548,799
Balance, January 31, 2021	$ 11,961,434		$ 11,961,434