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

X

- Definition

Represents the number of states the entity is licensed in.

+ References

No definition available.

+ Details

Name:	djco_NumberOfStateLicensed
Namespace Prefix:	djco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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