v3.8.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2017
Nov. 03, 2017
Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q3  
Trading Symbol MN  
Entity Registrant Name Manning & Napier, Inc.  
Entity Central Index Key 0001524223  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Class A common stock    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   15,039,347
Class B common stock    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,000