XML 56 R37.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 15 - Shareholders' Equity (Tables) | 12 Months Ended
--- | ---
Oct. 31, 2017
Notes Tables |
Schedule of Share Repurchases [Table Text Block] |
Fiscal years ended October 31, |  | Shares repurchased |  |  | Cost |
2017 |  |  | 5,701 |  |  | $ | 18,122 |
2016 |  |  | 14,225 |  |  |  | 40,150 |
2015 |  |  | 80,636 |  |  |  | 379,675 |

X
- Definition Tabular disclosure of shares repurchased. + References No definition available. + Details
Name: | occ_ScheduleOfShareRepurchasesTableTextBlock
Namespace Prefix: | occ_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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