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Note 12 - Commitments (Details Textual)	3 Months Ended	9 Months Ended
	Jul. 31, 2022 USD ($) ft²	Jul. 31, 2022 USD ($) ft²	Apr. 30, 2022 USD ($)	Oct. 31, 2021 USD ($)
Lessee, Operating Lease, Remaining Lease Term (Year)	5 years	5 years
Operating Lease, Right-of-Use Asset	$ 13,967,000	$ 13,967,000	$ 14,000,000	$ 1,453,000
Operating Lease, Liability, Total	16,839,000	16,839,000	16,800,000
Operating Lease, Liability, Current	1,576,000	1,576,000		832,000
Operating Lease, Liability, Noncurrent	15,263,000	15,263,000		$ 675,000
Tenant Improvement Allowance [Member]
Other Receivables	2,700,000	2,700,000
Cables and Connectors Facilities [Member[
Lessee, Operating Lease, Monthly Rent	$ 33,957	$ 33,957
Area of Real Estate Property (Square Foot) | ft²	21,908	21,908
Lessee, Operating Lease, Renewal Term (Month)	6 months	6 months
Cables and Connectors and C Enterprises Facilities [Member]
Operating Lease, Right-of-Use Asset	$ 12,800,000	$ 12,800,000
Operating Lease, Liability, Total	15,600,000	15,600,000
Operating Lease, Liability, Current	$ 726,000	$ 726,000
Area of Real Estate Property (Square Foot) | ft²	86,952	86,952
Lessee, Operating Lease, Term of Contract (Month)	120 months	120 months
Lessee, Operating Lease, Monthly Rent Payment		$ 139,123
Operating Lease, Liability, Noncurrent	$ 14,900,000	$ 14,900,000
Lessee, Operating Lease, Discount Rate	3.76%	3.76%
Operating Lease, Expense	$ 135,000
Other Current Liabilities [Member]
Operating Lease, Liability, Current	1,576,000	$ 1,576,000	$ 1,600,000
K and K Unlimited [Member]
Lessee, Operating Lease, Monthly Rent	$ 16,000	$ 16,000
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	10 years	10 years

X

- Definition

The monthly rent for operating lease of the lessee.

+ References

No definition available.

+ Details

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X

- Definition

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+ References

No definition available.

+ Details

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X

- Definition

Area of a real estate property.

+ References

No definition available.

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X

- Definition

Discount rate used by lessee to determine present value of operating lease payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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X

- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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X

- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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X

- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

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X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
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-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-SubTopic 20
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-Paragraph 1
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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

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-Publisher FASB
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-SubTopic 20
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X

- Definition

Amount due from parties in nontrade transactions, classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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