XML 40 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
DOCUMENT AND ENTITY INFORMATION
 6 Months Ended
Jun. 30, 2012
Jul. 25, 2012
Common Class A [Member]
Jul. 25, 2012
Common Class B [Member]
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   31,859,709 2,503
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jun. 30, 2012    
Document Fiscal Period Focus Q2    
Document Fiscal Year Focus 2012