Document And Entity Information - USD ($)	9 Months Ended
	Sep. 30, 2015	Oct. 31, 2015	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Transact Technologies Incorporated
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		7,754,792
Entity Public Float			$ 49,000,000
Amendment Flag	false
Entity Central Index Key	0001017303
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3