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Accrued and Other Liabilities - Schedule of Changes in Accrued and Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Accrued Liabilities and Other Liabilities [Roll Forward] |  |  |  |  |  |
Beginning balance | $ 5,210 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |  | $ 3,624 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |  | $ 4,049 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |
Income attributable to noncontrolling interests | 6,890 mdca_IncomePayableToNoncontrollingInterests |  | 6,461 mdca_IncomePayableToNoncontrollingInterests |  | 6,863 mdca_IncomePayableToNoncontrollingInterests |
Distributions made | (6,523)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  | (5,525)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  | (7,673)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |
Other | 437 mdca_AdjustmentsToNoncontrollingInterest | [1] | 650 mdca_AdjustmentsToNoncontrollingInterest | [1] | 385 mdca_AdjustmentsToNoncontrollingInterest | [1]
Ending balance | $ 6,014 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |  | $ 5,210 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |  | $ 3,624 mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest |
[1] | Other consists primarily of step up transactions, discontinued operations and cumulative translation adjustments.

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- Definition Carrying value as of the balance sheet date of accrued and other liabilities attributable to noncontrolling interest during the reporting period. + References No definition available. + Details
Name: | mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | mdca_AccruedLiabilitiesandOtherLiabilitiesRollForward
Namespace Prefix: | mdca_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Other transactions related to noncontrolling interest. + References No definition available. + Details
Name: | mdca_AdjustmentsToNoncontrollingInterest
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Income payable to noncontrolling interests holders for their share of profits. + References No definition available. + Details
Name: | mdca_IncomePayableToNoncontrollingInterests
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration