Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 05, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	INTER PARFUMS INC
Entity Central Index Key	0000822663
Document Type	10-Q
Trading Symbol	IPAR
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Ex Transition Period	false
Entity's Reporting Status Current	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		31,333,842
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2018