2. Property and Equipment, net: Property and Equipment, net (Details) - USD ($)	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019
Property and equipment, gross	$ 4,822,000	$ 7,222,000
Less: accumulated depreciation	4,564,000	6,670,000
Property and equipment, net	257,561	552,150
Leasehold Improvements
Property and equipment, gross	4,000	216,000
Equipment
Property and equipment, gross	4,789,000	6,413,000
Furniture and Fixtures
Property and equipment, gross	$ 29,000	$ 593,000
Minimum \| Leasehold Improvements
Property and equipment, useful life	3 years
Minimum \| Equipment
Property and equipment, useful life	5 years
Minimum \| Furniture and Fixtures
Property and equipment, useful life	5 years
Maximum \| Leasehold Improvements
Property and equipment, useful life	5 years
Maximum \| Equipment
Property and equipment, useful life	10 years
Maximum \| Furniture and Fixtures
Property and equipment, useful life	10 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 50
-Paragraph 1
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(8))
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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