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Long-Term Debt And Note Payable To Bank - (Narrative) (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended			0 Months Ended
	Jan. 31, 2014 Commercial Loan [Member]	Oct. 31, 2013 Commercial Loan [Member]	Jan. 31, 2014 Virginia Real Estate Loan [Member]	Jan. 31, 2014 Subsequent Event [Member] Commercial Loan [Member]	Jan. 31, 2014 Subsequent Event [Member] Certain Receivables [Member]	Jan. 31, 2014 Subsequent Event [Member] Certain Foreign Receivables [Member]	Aug. 30, 2013 Subsequent Event [Member] Certain Raw Materials of Inventory [Member]
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage	2.37%		4.25%
Line of credit facility, maximum amount outstanding during period				$ 9.0		$ 1.0
Line of credit facility, maximum borrowing capacity, percentage of related category used for calculation					85.00%	35.00%	25.00%
Line of credit facility, maximum borrowing capacity, maximum aging of receivables					90 days
Debt instrument, description of variable rate basis				LIBOR
Debt instrument, basis spread on variable rate				2.20%
Line of credit facility, amount outstanding	2.0	2.5
Line of credit facility, remaining borrowing capacity	$ 6.6	$ 6.5

X

- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Maximum Aging Of Receivables

+ References

No definition available.

+ Details

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Namespace Prefix:	occ_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Related Category Used for Calculation

+ References

No definition available.

+ Details

Name:	occ_LineOfCreditFacilityMaximumBorrowingCapacityPercentageOfRelatedCategoryUsedForCalculation
Namespace Prefix:	occ_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant