Document and Entity Information
6 Months Ended
Jun. 30, 2012
Aug. 08, 2012
Class A Common Stock
Aug. 08, 2012
Class B Common Stock
Entity Registrant Name Manning & Napier, Inc.    
Entity Central Index Key 0001524223    
Document Type 10-Q    
Document Period End Date Jun. 30, 2012    
Amendment Flag false    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q2    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   13,583,873 1,000