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Note 11 - Non-controlling Interest (Details Textual) | Aug. 01, 2008
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Centric Solutions LLC [Member] |
Business Acquisition, Percentage of Voting Interests Acquired | 70.00%

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=occ_CentricSolutionsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |