Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 31, 2026	Oct. 31, 2025
Current assets:
Cash and cash equivalents	$ 1,398	$ 1,244
Short-term investments	12,466	13,930
Prepaid expenses and other current assets	1,047	713
Total current assets	14,911	15,887
Operating lease right-of-use asset	163	193
Total assets	15,074	16,080
Current liabilities:
Accounts payable	282	165
Accrued expenses	1,417	1,761
Operating lease liability, current	46	41
Total current liabilities	1,745	1,967
Operating lease liability, non-current	128	163
Total liabilities	1,873	2,130
Commitments and contingencies (Note 10)
Shareholders’ equity:
Preferred stock, value
Common stock, par value $.01 per share; 100,000,000 shares authorized; 34,584,538 and 33,013,829 shares issued and outstanding as of July 31, 2026 and October 31, 2025, respectively	346	330
Additional paid-in capital	273,489	266,508
Accumulated deficit	(259,364)	(251,677)
Total shareholders’ equity	14,471	15,161
Noncontrolling interest (Note 2)	(1,270)	(1,211)
Total equity	13,201	13,950
Total liabilities and equity	15,074	16,080
Series A Convertible Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, value

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).