Document and Entity Information	12 Months Ended
	Dec. 31, 2018 shares
Document and Entity Information [Abstract]
Entity Registrant Name	ATTUNITY LTD
Entity Central Index Key	0000893821
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding	21,672,401
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No