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Commitments, Contingencies and Guarantees (Details Textual) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract] |
Estimated Payments For Put Option Excluding Termination | $ 22,348
Estimated Issuance of Share Capital for Purchase of Ownership Interest on Exercise of Put Options | 1,538
Estimated Payment for Put Options Upon Termination | 168,027
Estimated Aggregate Amount For Put Options | 185,925
Investment Commitments | 13,018
Letters of Credit Outstanding, Amount | $ 4,827

X
- Definition The estimated aggregate amount for put options has been recorded as on the reporting period. + References No definition available. + Details
Name: | mdca_EstimatedAggregateAmountForPutOptions
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Estimated issuance of share capital to purchase ownership interests on exercise of put options. + References No definition available. + Details
Name: | mdca_EstimatedIssuanceOfShareCapitalForPurchaseOfOwnershipInterestOnExerciseOfPutOptions
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The estimated payment for put options upon termination has been recorded as on the reporting period. + References No definition available. + Details
Name: | mdca_EstimatedPaymentForPutOptionsUponTermination
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Estimated payments for put option excluding termination as on the reporting period. + References No definition available. + Details
Name: | mdca_EstimatedPaymentsForPutOptionExcludingTermination
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fund to be committed towards investments. + References No definition available. + Details
Name: | mdca_InvestmentCommitments
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant