XML 42 R29.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share Capital (Details Textual) | Oct. 27, 2017 shares | Sep. 30, 2017 vote shares | Dec. 31, 2016 shares
--- | --- | --- | ---
Preferred Stock [Member] | Series 4 Convertible Preferred Stock [Domain] |  |  |
Share Capital [Line Items] |  |  |
Shares, Outstanding | 95,000 | 95,000 | 0
Common Stock [Member] |  |  |
Share Capital [Line Items] |  |  |
Shares, Outstanding |  | 56,314,344 | 52,802,058
Common Stock [Member] | Common Class A [Member] |  |  |
Share Capital [Line Items] |  |  |
Common Stock, Voting Rights, Number of Votes per Share | vote |  | 1 |
Shares, Outstanding |  | 56,310,589 | 52,798,303
Common Stock [Member] | Common Class B |  |  |
Share Capital [Line Items] |  |  |
Common Stock, Voting Rights, Number of Votes per Share | vote |  | 20 |
Shares, Outstanding |  | 3,755 |

X
- Definition Common Stock, Voting Rights, Number of Votes per Share + References No definition available. + Details
Name: | mdca_CommonStockVotingRightsNumberofVotesperShare
Namespace Prefix: | mdca_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | mdca_ShareCapitalLineItems
Namespace Prefix: | mdca_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
Name: | us-gaap_SharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=mdca_Series4ConvertiblePreferredStockDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |