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Subsequent Events	9 Months Ended
	Jul. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	12.  Subsequent event       In August 2017, Hurricane Harvey made landfall as a category 4 hurricane impacting the Houston metropolitan area with significant flooding.  Although we suffered only minimal physical damage to our facility in Houston, the damage to the region in general has temporarily impacted our ability to operate.  We are continuing to evaluate the impact of Harvey on our business, but we do not believe that this will have a material impact on our financial statements.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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