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
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 Income (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, 2021	236,796,866
Balance at Jul. 31, 2021	$ 237	441,991	360	(291,625)	493	$ 151,456
Issued upon exercise of stock options (in shares)						1,947,645
Net Income (loss) for the period						$ (204)
Other comprehensive income (loss)						(614)
Balance (in shares) at Apr. 30, 2022	284,077,874
Balance at Apr. 30, 2022	$ 284	598,794	394	(291,829)	(121)	307,522
Balance (in shares) at Oct. 31, 2021	258,996,829
Balance at Oct. 31, 2021	$ 259	507,325	360	(293,699)	636	214,881
Issued under ATM offering, net of issuance costs (in shares)	17,751,658
Issued under ATM offering, net of issuance costs	$ 18	67,955	0	0	0	67,973
Issued upon exercise of stock options (in shares)	193,345
Issued upon exercise of stock options	$ 0	63	0	0	0	63
Issued upon exercise of warrants (in shares)	572,850
Issued upon exercise of warrants	$ 1	1,141	0	0	0	1,142
Common stock issued for consulting services (in shares)	4,608
Common stock issued for consulting services	$ 0	17	0	0	0	17
Common stock issued under Stock Incentive Plan (in shares)	109,986
Common stock issued under Stock Incentive Plan	$ 0	399	0	0	0	399
Amortization of stock-based compensation	0	654	0	0	0	654
Net Income (loss) for the period	0	0	0	(5,474)	0	(5,474)
Other comprehensive income (loss)	$ 0	0	0	0	(618)	(618)
Issued for acquisition of mineral properties (in shares)	47,715
Issued for acquisition of mineral properties	$ 0	206	0	0	0	206
Issued as anniversary fees for credit facility (in shares)	161,594
Issued as anniversary fees for credit facility	$ 0	600	0	0	0	600
Balance (in shares) at Jan. 31, 2022	277,838,585
Balance at Jan. 31, 2022	$ 278	578,360	360	(299,173)	18	279,843
Issued under ATM offering, net of issuance costs (in shares)	4,800,000
Issued under ATM offering, net of issuance costs	$ 5	18,552	0	0	0	$ 18,557
Issued upon exercise of stock options (in shares)	1,000,310					1,000,310
Issued upon exercise of stock options	$ 1	403	0	0	0	$ 404
Issued upon exercise of warrants (in shares)	339,845
Issued upon exercise of warrants	$ 0	611	34	0	0	645
Common stock issued for consulting services (in shares)	2,854
Common stock issued for consulting services	$ 0	13	0	0	0	13
Common stock issued under Stock Incentive Plan (in shares)	96,280
Common stock issued under Stock Incentive Plan	$ 0	344	0	0	0	344
Amortization of stock-based compensation	0	511	0	0	0	511
Net Income (loss) for the period	0	0	0	7,344	0	7,344
Other comprehensive income (loss)	$ 0	0	0	0	(139)	(139)
Balance (in shares) at Apr. 30, 2022	284,077,874
Balance at Apr. 30, 2022	$ 284	598,794	394	(291,829)	(121)	307,522
Balance (in shares) at Jul. 31, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	613,179	0	(286,373)	(186)	326,909
Issued for acquisition of UEX and Roughrider (in shares)	66,324,560
Issued for acquisition of UEX and Roughrider	$ 66	235,306	0	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	0	21,714
Issued upon exercise of stock options (in shares)	1,404,601
Issued upon exercise of stock options	$ 2	58	0	0	0	60
Issued upon exercise of warrants (in shares)	3,410,898
Issued upon exercise of warrants	$ 4	6,136	0	0	0	6,140
Common stock issued for consulting services (in shares)	4,179
Common stock issued for consulting services	$ 0	17	0	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	0	299
Amortization of stock-based compensation	0	1,426	0	0	0	1,426
Replacement options issued for acquisition of UEX	0	4,026	0	0	0	4,026
Net Income (loss) for the period	0	0	0	(3,756)	0	(3,756)
Other comprehensive income (loss)	$ 0	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	0	(290,129)	(10,954)	581,439
Balance (in shares) at Jul. 31, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	613,179	0	(286,373)	(186)	326,909
Balance (in shares) at Jan. 31, 2023	373,370,417
Balance at Jan. 31, 2023	$ 373	909,869	0	(279,237)	(6,337)	624,668
Balance (in shares) at Jul. 31, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	613,179	0	(286,373)	(186)	$ 326,909
Issued upon exercise of stock options (in shares)						1,703,596
Net Income (loss) for the period						$ (3,824)
Other comprehensive income (loss)						(9,740)
Balance (in shares) at Apr. 30, 2023	376,547,894
Balance at Apr. 30, 2023	$ 377	921,562	22	(290,197)	(9,926)	621,838
Balance (in shares) at Oct. 31, 2022	366,075,053
Balance at Oct. 31, 2022	$ 366	882,156	0	(290,129)	(10,954)	581,439
Issued under ATM offering, net of issuance costs (in shares)	7,040,363
Issued under ATM offering, net of issuance costs	$ 7	26,099	0	0	0	26,106
Issued upon exercise of stock options (in shares)	94,302
Issued upon exercise of stock options	$ 0	0	0	0	0	0
Issued upon exercise of warrants (in shares)	45,000
Issued upon exercise of warrants	$ 0	66	0	0	0	66
Common stock issued for consulting services (in shares)	49,228
Common stock issued for consulting services	$ 0	201	0	0	0	201
Common stock issued under Stock Incentive Plan (in shares)	66,471
Common stock issued under Stock Incentive Plan	$ 0	262	0	0	0	262
Amortization of stock-based compensation	0	1,085	0	0	0	1,085
Net Income (loss) for the period	0	0	0	10,892	0	10,892
Other comprehensive income (loss)	$ 0	0	0	0	4,617	4,617
Balance (in shares) at Jan. 31, 2023	373,370,417
Balance at Jan. 31, 2023	$ 373	909,869	0	(279,237)	(6,337)	624,668
Issued under ATM offering, net of issuance costs (in shares)	2,912,000
Issued under ATM offering, net of issuance costs	$ 4	10,595	0	0	0	$ 10,599
Issued upon exercise of stock options (in shares)	204,693					204,693
Issued upon exercise of stock options	$ 0	0	0	0	0	$ 0
Issued upon exercise of warrants	0	0	22	0	0	22
Common stock issued for consulting services	$ 0	0	0	0	0	0
Common stock issued under Stock Incentive Plan (in shares)	60,784
Common stock issued under Stock Incentive Plan	$ 0	211	0	0	0	211
Amortization of stock-based compensation	0	887	0	0	0	887
Net Income (loss) for the period	0	0	0	(10,960)	0	(10,960)
Other comprehensive income (loss)	$ 0	0	0	0	(3,589)	(3,589)
Balance (in shares) at Apr. 30, 2023	376,547,894
Balance at Apr. 30, 2023	$ 377	$ 921,562	$ 22	$ (290,197)	$ (9,926)	$ 621,838