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Goodwill and Intangible Assets - Textual (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Goodwill [Line Items] |  |  |
Goodwill, impaired, accumulated impairment loss | $ 46,883 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss |  |
Weighted average amortization period | 6 years |  |
Finite lived intangible assets amortization expenses | $ 29,749 mdca_FiniteLivedIntangibleAssetsAmortizationExpenses | $ 18,456 mdca_FiniteLivedIntangibleAssetsAmortizationExpenses | $ 26,074 mdca_FiniteLivedIntangibleAssetsAmortizationExpenses
Other Intangible Assets |  |  |
Goodwill [Line Items] |  |  |
Weighted average amortization period | 7 years |  |
Customer Relationships |  |  |
Goodwill [Line Items] |  |  |
Weighted average amortization period | 5 years |  |

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- Definition Aggregate amount of intangible asset amortization recognized as expense during the period + References No definition available. + Details
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Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
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- Definition This represents the weighted average amortization period of intangible assets. + References No definition available. + Details
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Namespace Prefix: | mdca_
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Balance Type: | na
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |