XML 85 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document And Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Feb. 22, 2015
Document Information [Line Items]      
Trading Symbol MDCA    
Entity Registrant Name MDC PARTNERS INC    
Entity Central Index Key 0000876883    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float   $ 916dei_EntityPublicFloat  
Common Class A      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding     50,494,080dei_EntityCommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Common Class B      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding     3,755dei_EntityCommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember