Condensed 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, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	$ 613,179	$ 0	$ (286,373)	$ (186)	$ 326,909
Issued under ATM offerings, net of issuance costs (in shares)	5,218,890
Issued under ATM offerings, net of issuance costs	$ 5	21,709			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
Amortization of stock-based compensation	0	1,426	0	0	0	1,426
Net income for the period	0	0	0	(3,756)	0	(3,756)
Other comprehensive loss	$ 0	0	0	0	(10,768)	(10,768)
Issued upon exercise of warrants (in shares)	3,410,898
Issued upon exercise of warrants	$ 4	6,136	0	0	0	6,140
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 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
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	299
Replacement options issued for acquisition of UEX	$ 0	4,026	0	0	0	4,026
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 for the period						$ (3,824)
Other comprehensive 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 offerings, net of issuance costs (in shares)	7,040,363
Issued under ATM offerings, 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
Amortization of stock-based compensation	0	1,085	0	0	0	1,085
Net income for the period	0	0	0	10,892	0	10,892
Other comprehensive loss	$ 0	0	0	0	4,617	4,617
Issued upon exercise of warrants (in shares)	45,000
Issued upon exercise of warrants	$ 0	66	0	0	0	66
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
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	262
Issued under ATM offerings, net of issuance costs (in shares)	2,912,000
Issued under ATM offerings, 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
Amortization of stock-based compensation	0	887	0	0	0	887
Net income for the period	0	0	0	(10,960)	0	(10,960)
Other comprehensive loss	0	0	0	0	(3,589)	(3,589)
Issued upon exercise of warrants	$ 0	0	22	0	0	22
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
Common stock issued under Stock Incentive Plan (in shares)	60,784
Common stock issued under Stock Incentive Plan	$ 0	211	0		0	211
Balance (in shares) at Jul. 31, 2023	378,452,864
Balance at Jul. 31, 2023	$ 378	924,737	0	(289,680)	(3,608)	631,827
Issued under ATM offerings, net of issuance costs (in shares)	10,770,000
Issued under ATM offerings, net of issuance costs	$ 11	56,259	0	0	0	56,270
Issued upon exercise of stock options (in shares)	445,861
Issued upon exercise of stock options	$ 1	263	0	0	0	264
Amortization of stock-based compensation	0	1,572	0	0	0	1,572
Net income for the period	0	0	0	3,321	0	3,321
Other comprehensive loss	$ 0	0	0	0	(11,049)	(11,049)
Balance (in shares) at Oct. 31, 2023	389,668,725
Balance at Oct. 31, 2023	$ 390	982,831	0	(286,359)	(14,657)	682,205
Balance (in shares) at Jul. 31, 2023	378,452,864
Balance at Jul. 31, 2023	$ 378	924,737	0	(289,680)	(3,608)	$ 631,827
Issued upon exercise of stock options (in shares)						1,460,937
Net income for the period						$ (14,106)
Other comprehensive loss						(9,167)
Balance (in shares) at Apr. 30, 2024	405,951,114
Balance at Apr. 30, 2024	$ 406	1,094,795	0	(303,786)	(12,775)	778,640
Balance (in shares) at Oct. 31, 2023	389,668,725
Balance at Oct. 31, 2023	$ 390	982,831	0	(286,359)	(14,657)	682,205
Issued under ATM offerings, net of issuance costs (in shares)	10,418,029
Issued under ATM offerings, net of issuance costs	$ 10	73,228	0	0	0	73,238
Issued upon exercise of stock options (in shares)	669,999
Issued upon exercise of stock options	$ 1	(70)	0	0	0	(69)
Amortization of stock-based compensation	0	1,312	0	0	0	1,312
Net income for the period	0	0	0	2,250	0	2,250
Other comprehensive loss	$ 0	0	0	0	7,732	7,732
Issued upon exercise of warrants (in shares)	302,220
Issued upon exercise of warrants	$ 0	1,965	517	0	0	2,482
Balance (in shares) at Jan. 31, 2024	401,058,973
Balance at Jan. 31, 2024	$ 401	1,059,266	517	(284,109)	(6,925)	769,150
Issued under ATM offerings, net of issuance costs (in shares)	3,396,370
Issued under ATM offerings, net of issuance costs	$ 3	25,539	0	0	0	$ 25,542
Issued upon exercise of stock options (in shares)	345,077					345,077
Issued upon exercise of stock options	$ 1	209	0	0	0	$ 210
Amortization of stock-based compensation	0	1,103	0	0	0	1,103
Net income for the period	0	0	0	(19,677)	0	(19,677)
Other comprehensive loss	$ 0	0	0	0	(5,850)	(5,850)
Issued upon exercise of warrants (in shares)	1,150,694
Issued upon exercise of warrants	$ 1	8,678	(517)	0	0	8,162
Balance (in shares) at Apr. 30, 2024	405,951,114
Balance at Apr. 30, 2024	$ 406	$ 1,094,795	$ 0	$ (303,786)	$ (12,775)	$ 778,640