Segment Disclosure - Additional information (Detail) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Jul. 31, 2020
Customer
|
Jul. 31, 2019
Customer
|
Jul. 31, 2020
Customer
Segment
|
Jul. 31, 2019
Customer
|
|
| Segment Reporting Information [Line Items] | ||||
| Number of reportable operating segment | Segment | 2 | |||
| Customer concentration risk | Sales revenue | ||||
| Segment Reporting Information [Line Items] | ||||
| Number of major customers | Customer | 1 | 1 | 1 | 1 |