Net Income Attributable to Inter Parfums, Inc. Common Shareholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income attributable to Inter Parfums, Inc.	$ 17,077	$ 16,239	$ 37,194	$ 29,404
Denominator:
Weighted average shares	31,175	31,080	31,163	31,058
Effect of dilutive securities: Stock options	132	91	118	80
Denominator for diluted earnings per share	31,307	31,171	31,281	31,138
Net income attributable to Inter Parfums, Inc.
Basic (in dollars per share)	$ 0.55	$ 0.52	$ 1.19	$ 0.95
Diluted (in dollars per share)	$ 0.55	$ 0.52	$ 1.19	$ 0.94