Document and Entity Information
 6 Months Ended
Jun. 30, 2012
Aug. 06, 2012
Document and Entity Information    
Entity Registrant Name Digital Generation, Inc.  
Entity Central Index Key 0000934448  
Document Type 10-Q  
Document Period End Date Jun. 30, 2012  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   27,602,336
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q2