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Note 12 - Summarized Financial Information for Reportable Segments (Details) (USD $)

3 Months Ended

9 Months Ended

21 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

$ 11,147,000us-gaap_Revenues

$ 9,204,000us-gaap_Revenues

$ 31,926,000us-gaap_Revenues

$ 26,650,000us-gaap_Revenues

(Loss) income from operations

(263,000)us-gaap_IncomeLossFromContinuingOperations

446,000us-gaap_IncomeLossFromContinuingOperations

(2,050,000)us-gaap_IncomeLossFromContinuingOperations

2,284,000us-gaap_IncomeLossFromContinuingOperations

Income (loss) before taxes

13,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

1,161,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

(564,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

4,086,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

4,086,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

Provision for (benefit from) income taxes

(25,000)us-gaap_IncomeTaxExpenseBenefit

335,000us-gaap_IncomeTaxExpenseBenefit

(15,000)us-gaap_IncomeTaxExpenseBenefit

1,275,000us-gaap_IncomeTaxExpenseBenefit

1,275,000us-gaap_IncomeTaxExpenseBenefit

Net (loss) income

38,000us-gaap_NetIncomeLoss

826,000us-gaap_NetIncomeLoss

(549,000)us-gaap_NetIncomeLoss

2,811,000us-gaap_NetIncomeLoss

Total assets

235,683,000us-gaap_Assets

173,751,000us-gaap_Assets

235,683,000us-gaap_Assets

173,751,000us-gaap_Assets

235,683,000us-gaap_Assets

Capital expenditures

194,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment

102,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment

403,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment

258,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment

Amortization of intangible assets

1,223,000us-gaap_AmortizationOfIntangibleAssets

476,000us-gaap_AmortizationOfIntangibleAssets

3,642,000us-gaap_AmortizationOfIntangibleAssets

1,111,000us-gaap_AmortizationOfIntangibleAssets

The Technology Companies [Member]

5,898,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

3,328,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

16,680,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

8,335,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

(Loss) income from operations

(1,235,000)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(1,548,000)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

(4,156,000)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(3,804,000)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Income (loss) before taxes

(1,727,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(1,540,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

(4,597,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(3,783,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Provision for (benefit from) income taxes

(1,000,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(505,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

(2,275,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(1,225,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Net (loss) income

(727,000)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(1,035,000)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

(2,322,000)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

(2,558,000)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Total assets

53,440,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

26,849,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

53,440,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

26,849,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

53,440,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

Capital expenditures

168,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

97,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

325,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

162,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Amortization of intangible assets

1,223,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

476,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[1]

3,642,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

1,111,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TheTechnologyCompaniesMember

^[2]

Traditional Business [Member]

5,249,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

5,876,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

15,246,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

18,315,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

(Loss) income from operations

972,000us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

1,994,000us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

2,106,000us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

6,088,000us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

Income (loss) before taxes

1,740,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

2,701,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

4,033,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

7,869,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

Provision for (benefit from) income taxes

975,000us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

840,000us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

2,260,000us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

2,500,000us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

Net (loss) income

765,000us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

1,861,000us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

1,773,000us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

5,369,000us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

Total assets

182,243,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

146,902,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

182,243,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

146,902,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

182,243,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

Capital expenditures

$ 26,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

$ 5,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

$ 78,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

$ 96,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= djco_TraditionalBusinessMember

[1]	Includes New Dawn’s financial results from April 1, 2013 through June 30, 2013 with revenues of $2,740,000 and expenses of $3,110,000 (including intangible amortization expenses of $476,000).
[2]	Includes New Dawn’s financial results from December 5, 2012 through June 30, 2013 with revenues of $6,430,000 and expenses of $7,168,000 (including intangible amortization expenses of $1,111,000).

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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