|
Segment Disclosure - Additional information (Detail)
|
12 Months Ended | ||
|---|---|---|---|
|
Oct. 31, 2012
Segment
Customer
|
Oct. 31, 2011
Customer
Segment
|
Oct. 31, 2010
Segment
Customer
|
|
| Segment Reporting Information [Line Items] | |||
| Number of reportable operating segment | 1 | 1 | 1 |
| Number of major customers | 1 | 1 | 1 |
| Percentage of revenues contributed by major customers | 10.50% | 10.60% | 10.90% |