Document and Entity Information
6 Months Ended
Jun. 30, 2018
Document And Entity Information [Abstract]  
Entity Registrant Name Arcturus Therapeutics Ltd.
Document Type 6-K
Trading Symbol ARCT
Current Fiscal Year End Date --12-31
Amendment Flag false
Entity Central Index Key 0001566049
Entity Filer Category Non-accelerated Filer
Document Period End Date Jun. 30, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q2