v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
May 04, 2018
Document Documentand Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
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  
Entity Common Stock, Shares Outstanding   15,325,688