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COMPREHENSIVE INCOME (LOSS) - Accumulated Other Comprehensive Income Items (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 6,212	$ 48,818
Foreign currency translation adjustment	198	2,973
Other comprehensive income	198	2,973
Ending balance	(13,431)	47,894
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	7,162	3,843
Foreign currency translation adjustment	198	2,973
Other comprehensive income	198	2,973
Ending balance	7,360	6,816
Foreign Currency Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	9,762	5,025
Foreign currency translation adjustment	198	2,973
Other comprehensive income	198	2,973
Ending balance	9,960	7,998
Pension Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(2,600)	(1,182)
Foreign currency translation adjustment	0	0
Other comprehensive income	0	0
Ending balance	$ (2,600)	$ (1,182)

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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