Segments and Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 178,242	$ 171,767
Net income attributable to Inter Parfums, Inc.	18,894	15,909
Total assets	824,482		$ 799,167
United States [Member]
Segment Reporting Information [Line Items]
Net sales	35,616	22,859
Net income attributable to Inter Parfums, Inc.	2,887	270
Total assets	152,714		133,406
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	143,767	149,514
Net income attributable to Inter Parfums, Inc.	16,007	15,639
Total assets	692,120		686,123
Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(1,141)	$ (606)
Total assets	$ (20,352)		$ (20,362)