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Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Deferred Acquisition Consideration, Fixed Payments	$ 3,153	$ 6,704
Business Acquisition, Contingent Consideration Potential Cash Payment, Total	$ 168,569	$ 111,732

X

- Definition

The aggregate amount of deferred acquisition consideration as of the reporting date.

+ References

No definition available.

+ Details

Name:	mdca_BusinessAcquisitionContingentConsiderationPotentialCashPaymentTotal
Namespace Prefix:	mdca_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The additional amount paid towards Deferred acquisition consideration.

+ References

No definition available.

+ Details

Name:	mdca_DeferredAcquisitionConsiderationFixedPayments
Namespace Prefix:	mdca_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant