v3.4.0.3
Document And Entity Information - shares
3 Months Ended
Mar. 31, 2016
Apr. 28, 2016
Document and Entity Information [Abstract]    
Entity Registrant Name JMP GROUP LLC  
Trading Symbol jmp  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   21,132,686
Amendment Flag false  
Entity Central Index Key 0001302350  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Accelerated Filer  
Entity Well-known Seasoned Issuer No  
Document Period End Date Mar. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1