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		$ (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				21,714
Issued upon exercise of stock options (in shares)	1,404,601
Issued upon exercise of stock options	$ 2	58				60
Amortization of stock-based compensation		1,426				1,426
Net income for the period	0	0		(3,756)	0	(3,756)
Other comprehensive loss	$ 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				6,140
Issued for acquisition of UEX and Roughrider (in shares)	66,324,560
Issued for acquisition of UEX and Roughrider	$ 66	235,306				235,372
Common stock issued for consulting services (in shares)	4,179
Common stock issued for consulting services	$ 0	17		0		17
Common stock issued under Stock Incentive Plan (in shares)	73,618
Common stock issued under Stock Incentive Plan	$ 0	299		0		299
Replacement options issued for acquisition of UEX	$ 0	4,026				4,026
Balance (in shares) at Oct. 31, 2022	366,075,053
Balance at Oct. 31, 2022	$ 366	882,156		(290,129)	(10,954)	581,439
Balance (in shares) at Jul. 31, 2022	289,638,307
Balance at Jul. 31, 2022	$ 289	613,179		(286,373)	(186)	$ 326,909
Issued upon exercise of stock options (in shares)						1,498,903
Net income for the period						$ 7,136
Other comprehensive loss						(6,151)
Balance (in shares) at Jan. 31, 2023	373,370,417
Balance at Jan. 31, 2023	$ 373	909,869		(279,237)	(6,337)	624,668
Balance (in shares) at Oct. 31, 2022	366,075,053
Balance at Oct. 31, 2022	$ 366	882,156		(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	$ 26,106
Issued upon exercise of stock options (in shares)	94,302					94,302
Issued upon exercise of stock options	$ 0	0		0	0	$ 0
Amortization of stock-based compensation	0	1,085		0	0	1,085
Net income for the period	0	0		10,892	0	10,892
Other comprehensive loss	$ 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	66
Common stock issued for consulting services (in shares)	49,228
Common stock issued for consulting services	$ 0	201		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
Balance (in shares) at Jan. 31, 2023	373,370,417
Balance at Jan. 31, 2023	$ 373	909,869		(279,237)	(6,337)	624,668
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)						1,115,860
Net income for the period						$ 5,571
Other comprehensive loss						(3,317)
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
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					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