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Note 1 - The Corporation and Operations (Details Textual) | 9 Months Ended
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Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of State Licensed | 7 djco_NumberOfStateLicensed

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- Definition Represents the number of states the entity is licensed in. + References No definition available. + Details
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Namespace Prefix: | djco_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration