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				$ 21,714
Issued upon exercise of stock options (in shares)	1,404,601					1,404,601
Issued upon exercise of stock options	$ 2	58				$ 60
Amortization of stock-based compensation		1,426				1,426
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)
Issued for acquisition of UEX and Roughrider (in shares)	66,324,560
Issued for acquisition of UEX and Roughrider	$ 66	235,306				235,372
Issued upon exercise of warrants (in shares)	3,410,898
Issued upon exercise of warrants	$ 4	6,136				6,140
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	0	(290,129)	(10,954)	581,439
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					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 (loss) for the period	0	0	0	3,321	0	3,321
Other comprehensive income (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