Document and Entity Information - shares
6 Months Ended
Jun. 30, 2018
Sep. 21, 2018
Document and Entity Information [Abstract]    
Entity Registrant Name Kornit Digital Ltd.  
Entity Central Index Key 0001625791  
Trading Symbol KRNT  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Type 6-K  
Document Period End Date Jun. 30, 2018  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2018  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   0