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Intangible assets (Detail) - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Intangible Assets [Line Items]
Amortizable intangible assets, net	$ 1,367	$ 1,642
Non-amortizable intangible assets, trade marks	657	657
Customer relationships (estimated lives 7 - 15 years)
Intangible Assets [Line Items]
Amortizable intangible assets, gross	2,879	2,879
Amortizable intangible assets, accumulated amortization	(1,619)	(1,354)
Amortizable intangible assets, net	1,260	1,525
Patents (estimated life 14 years)
Intangible Assets [Line Items]
Amortizable intangible assets, gross	142	142
Amortizable intangible assets, accumulated amortization	(35)	(25)
Amortizable intangible assets, net	$ 107	$ 117

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- Definition

Intangible Assets [Line Items]

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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