INCOME TAXES - Difference of Income Tax Expense Attributable to Income from Continuing Operations and Expense Computed using U.S. Federal Income Tax (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2023	Apr. 30, 2023	Jul. 31, 2022
Income Tax Disclosure [Abstract]
Computed "expected" income tax expense (benefit)	$ 1,627	$ 1,909	$ 448
Increase (decrease) in income tax expense resulting from:
Change in valuation allowance	(350,469)	(424)	21,703
Foreign tax rate differential	(255)	(50)	56
Nondeductible expenses	459	0	159
Foreign withholding taxes	245	147	134
Foreign other adjustments	(246)	0	951
Tax basis in excess of financial basis for intangible and fixed assets	1,141	0	4,775
Addition of uncertain tax position reserves	(430)	11	58
Worthless stock deduction	0	0	(16,860)
State income taxes, net of federal benefit	(1,916)	37	(603)
Expiration of net operating loss	347,462	0	0
Deferred true-up	1,786	0	751
Other	198	0	(184)
Total tax (benefit) provision	$ (398)	$ 1,630	$ 11,388