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9. Intangible Assets (Details)	Oct. 28, 2018 USD ($)
Disclosure Text Block [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 596,000

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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