Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Total
Balance at Jul. 31, 2021	$ 485	$ 337,126	$ (270,377)	$ 1,352	$ 68,586
Balance (in Shares) at Jul. 31, 2021	48,471,771
Net loss for the period			(9,828)		(9,828)
Share-based compensation charges		1,057			1,057
Exercise of stock options		28			28
Exercise of stock options (in Shares)	11,300
Issuance of common stock for employee 401(k) plan match	$ 2	812			814
Issuance of common stock for employee 401(k) plan match (in Shares)	237,383
Foreign currency translation adjustments				1,530	1,530
Balance at Apr. 30, 2022	$ 487	339,023	(280,205)	2,882	62,187
Balance (in Shares) at Apr. 30, 2022	48,720,454
Balance at Jan. 31, 2022	$ 485	338,021	(275,351)	1,971	65,126
Balance (in Shares) at Jan. 31, 2022	48,471,771
Net loss for the period			(4,854)		(4,854)
Share-based compensation charges		162			162
Exercise of stock options		28			28
Exercise of stock options (in Shares)	11,300
Issuance of common stock for employee 401(k) plan match	$ 2	812			814
Issuance of common stock for employee 401(k) plan match (in Shares)	237,383
Foreign currency translation adjustments				911	911
Balance at Apr. 30, 2022	$ 487	339,023	(280,205)	2,882	62,187
Balance (in Shares) at Apr. 30, 2022	48,720,454
Balance at Jul. 31, 2022	$ 487	339,462	(288,638)	3,151	54,462
Balance (in Shares) at Jul. 31, 2022	48,720,454
Net loss for the period			(37,142)		(37,142)
Share-based compensation charges		1,508			1,508
Vesting of restricted stock units	$ 1				1
Vesting of restricted stock units (in Shares)	86,667
Vesting of performance stock units
Vesting of performance stock units (in Shares)	12,600
Exercise of stock options		14			$ 14
Exercise of stock options (in Shares)	6,667				6,667
Issuance of common stock for employee 401(k) plan match	$ 8	1,071			$ 1,079
Issuance of common stock for employee 401(k) plan match (in Shares)	843,100
Foreign currency translation adjustments				(994)	(994)
Balance at Apr. 30, 2023	$ 496	342,055	(325,780)	2,157	18,928
Balance (in Shares) at Apr. 30, 2023	49,669,488
Balance at Jan. 31, 2023	$ 487	340,407	(310,593)	2,529	32,830
Balance (in Shares) at Jan. 31, 2023	48,733,054
Net loss for the period			(15,187)		(15,187)
Share-based compensation charges		563			563
Vesting of restricted stock units	$ 1				1
Vesting of restricted stock units (in Shares)	86,667
Exercise of stock options		14			14
Exercise of stock options (in Shares)	6,667
Issuance of common stock for employee 401(k) plan match	$ 8	1,071			1,079
Issuance of common stock for employee 401(k) plan match (in Shares)	843,100
Foreign currency translation adjustments				(372)	(372)
Balance at Apr. 30, 2023	$ 496	$ 342,055	$ (325,780)	$ 2,157	$ 18,928
Balance (in Shares) at Apr. 30, 2023	49,669,488