Note 8 - Equity-accounted Investment - Equity-accounted Investment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Balance			$ 20,729,674
Balance	$ 23,009,832		23,009,832
Total	1,732	$ 600,913	2,754,899	$ (102,692)
Uranium Royalty Corp [Member]
Balance			20,729,674
Share of income from URC	(651,996)	600,913	182,717	(102,692)
Gain on dilution of ownership interest	653,728	0	2,572,182	0
Translation loss			(474,741)
Balance	23,009,832		23,009,832
Gain on dilution of ownership interest	653,728	0	2,572,182	0
Total	$ 1,732	$ 600,913	$ 2,754,899	$ (102,692)