XML 49 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document And Entity Information
 3 Months Ended
Mar. 31, 2014
Apr. 25, 2014
Common Class A [Member]
Apr. 25, 2014
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   50,283,325 3,755
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Mar. 31, 2014    
Document Fiscal Period Focus Q1    
Document Fiscal Year Focus 2014