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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2017
Mar. 16, 2018
Jun. 30, 2017
Document and Entity Information [Abstract]      
Entity Registrant Name PEERSTREAM, INC.    
Entity Central Index Key 0001355839    
Trading Symbol PEER    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Entity Filer Category Smaller Reporting Company    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 4,856,429
Entity Common Stock, Shares Outstanding   6,723,223