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Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2020	Jul. 31, 2020	Jul. 31, 2020	Jul. 31, 2019	Nov. 01, 2019	Oct. 31, 2019
Proceeds from Issuance of Long-term Debt, Total			$ 2,788
Operating Lease, Right-of-Use Asset		$ 1,659	1,659
Operating Lease, Liability, Total		1,753	$ 1,753
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset					$ 2,300
Operating Lease, Liability, Total					$ 2,400
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 2,800	$ 2,800

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
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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X

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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