XML 68 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document And Entity Information
 9 Months Ended
Sep. 30, 2013
Oct. 25, 2013
Common Class A [Member]
Oct. 25, 2013
Common Class B [Member]
Document Information [Line Items]      
Entity Registrant Name MDC PARTNERS INC    
Entity Central Index Key 0000876883    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Trading Symbol MDCA    
Entity Common Stock, Shares Outstanding   32,368,059 2,503
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 30, 2013    
Document Fiscal Period Focus Q3    
Document Fiscal Year Focus 2013