XML 28 R18.htm IDEA: XBRL DOCUMENT
v3.7.0.1

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.

X
- References No definition available. + Details
Name: | us-gaap_SubsequentEventsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_SubsequentEventsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration