Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Share Issuance Obligation [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jul. 31, 2021	236,796,866
Balance at Jul. 31, 2021	$ 237	$ 441,991	$ 360	$ (291,625)	$ 493	$ 151,456
Issued under ATM offering, net of issuance costs (in shares)	20,743,878
Issued under ATM offering, net of issuance costs	$ 21	62,650				$ 62,671
Issued upon exercise of stock options (in shares)	753,990					753,990
Issued upon exercise of stock options	$ 1	383				$ 384
Issued upon exercise of warrants (in shares)	491,849
Issued upon exercise of warrants	$ 0	910				910
Common stock issued for consulting services (in shares)	4,607
Common stock issued for consulting services	$ 0	14	0			14
Common stock issued under Stock Incentive Plan (in shares)	141,490
Common stock issued under Stock Incentive Plan	$ 0	355	0			355
Amortization of stock-based compensation		803				803
Net loss for the period	$ 0	0	0	(2,074)	0	(2,074)
Other comprehensive income (loss)					143	143
Issued for acquisition of mineral properties (in shares)	64,149
Issued for acquisition of mineral properties	$ 0	219	0	0	0	219
Balance (in shares) at Oct. 31, 2021	258,996,829
Balance at Oct. 31, 2021	$ 259	507,325	$ 360	(293,699)	636	214,881
Balance (in shares) at Jul. 31, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	613,179		(286,373)	(186)	326,909
Issued for acquistion of UEX and Roughrider (in shares)	66,324,560
Issued for acquistion of UEX and Roughrider	$ 66	235,306		0	0	235,372
Issued under ATM offering, net of issuance costs (in shares)	5,218,890
Issued under ATM offering, net of issuance costs	$ 5	21,709		0	0	$ 21,714
Issued upon exercise of stock options (in shares)	1,404,601					1,404,601
Issued upon exercise of stock options	$ 2	58		0	0	$ 60
Issued upon exercise of warrants (in shares)	3,410,898
Issued upon exercise of warrants	$ 4	6,136		0	0	6,140
Common stock issued for consulting services (in shares)	4,179
Common stock issued for consulting services	$ 0	17		0	0	17
Common stock issued under Stock Incentive Plan (in shares)	73,618
Common stock issued under Stock Incentive Plan	$ 0	299		0	0	299
Amortization of stock-based compensation	0	1,426		0	0	1,426
Replacement options issued for acquisition of UEX	0	4,026		0	0	4,026
Net loss for the period	0	0		(3,756)	0	(3,756)
Other comprehensive income (loss)	$ 0	0		0	(10,768)	(10,768)
Balance (in shares) at Oct. 31, 2022	366,075,053
Balance at Oct. 31, 2022	$ 366	$ 882,156		$ (290,129)	$ (10,954)	$ 581,439