Segments and Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 675,574	$ 591,251	$ 521,072
Net income attributable to Inter Parfums, Inc.	53,793	41,594	33,331
Depreciation and amortization expense including impairment loss	11,031	11,914	15,341
Interest and dividend income	3,957	2,983	3,331
Interest expense	2,578	1,992	2,340
Income tax expense	26,144	22,812	23,826
Total assets	799,167	777,772	682,409
Additions to long-lived assets	23,369	4,069	5,742
Total long-lived assets	214,164	210,825	193,944
Deferred tax assets	9,299	9,658	8,090
Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(2,999)	(1,653)	(382)
Net income attributable to Inter Parfums, Inc.	(155)	(34)	(74)
Income tax expense	(18)	(21)	(48)
Total assets	(20,362)	(9,522)	(9,598)
Deferred tax assets	88	69	48
United States [Member]
Segment Reporting Information [Line Items]
Net sales	140,768	116,244	117,256
Net income attributable to Inter Parfums, Inc.	13,071	7,051	8,285
Depreciation and amortization expense including impairment loss	2,711	3,943	1,816
Interest and dividend income	137	58	22
Interest expense	419
Income tax expense	2,264	3,764	4,278
Total assets	133,406	92,909	89,930
Additions to long-lived assets	19,181	980	930
Total long-lived assets	25,753	9,284	12,247
Deferred tax assets	650	781	194
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	537,805	476,660	404,198
Net income attributable to Inter Parfums, Inc.	40,877	34,577	25,120
Depreciation and amortization expense including impairment loss	8,320	7,971	13,525
Interest and dividend income	3,820	2,925	3,309
Interest expense	2,159	1,991	2,340
Income tax expense	23,898	19,069	19,596
Total assets	686,123	694,385	602,077
Additions to long-lived assets	4,188	3,089	4,812
Total long-lived assets	188,411	201,541	181,697
Deferred tax assets	$ 8,561	$ 8,808	$ 7,848