Equity (Narrative) (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Inter Parfums, Inc. [Member] USD ($)	Dec. 31, 2013 Interparfums SA [Member] USD ($)	Dec. 31, 2013 Interparfums SA [Member] EUR (€)	Dec. 31, 2013 Chief Executive Officer [Member] USD ($)	Dec. 31, 2012 Chief Executive Officer [Member] USD ($)	Dec. 31, 2011 Chief Executive Officer [Member] USD ($)	Dec. 31, 2013 President [Member] USD ($)	Dec. 31, 2012 President [Member] USD ($)	Dec. 31, 2011 President [Member] USD ($)	Dec. 31, 2013 Stock Options [Member] USD ($)	Dec. 31, 2012 Stock Options [Member] USD ($)	Dec. 31, 2011 Stock Options [Member] USD ($)	Dec. 31, 2013 Stock Options [Member] Minimum [Member]	Dec. 31, 2013 Stock Options [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term														6 years
Vesting period																	4 years	5 years
Employee stock options, fair value of shares vested														$ 500,000	$ 900,000
Decrease in income before income tax due to share-based payment expense		800,000	800,000	1,100,000
Decrease in income attributable to Inter Parfums, Inc due to share-based payment expense		500,000	500,000	600,000
Decrease in diluted earnings per share due to share-based payment expense		$ 10,000	$ 10,000	$ 20,000
Number of shares available for grant														461,075
Aggregate intrinsic value of options outstanding														10,400,000
Unrecognized compensation cost related to stock options					2,300,000	150,000	100,000
Unrecognized compensation cost, recognition period					5 years	4 years	4 years
Weighted average grant date fair value		$ 9.20												$ 9.20	$ 5.54	$ 4.59
Options exercisable, weighted average exercise price														$ 13.76
Weighted average remaining contractual life of options outstanding, options exercisable														2 years 3 months 26 days
Aggregate intrinsic value of exercisable options														6,100,000
Shares issued upon exercise of stock options, shares		204,240	226,160	95,625				13,875	28,500	60,000	13,875	28,500	60,000
Exercises, aggregate exercise prices		4,088,000	1,359,000	720,000				300,000	700,000	1,600,000	300,000	700,000	1,600,000
Shares tendered for options exercised								10,080	18,880	82,322	10,080	18,880	82,322
Shares tendered for tax withholding								1,193	2,573	4,710
Dividends declared	$ 3,700,000
Dividends declared per share	$ 0.12	$ 0.96	$ 0.32	$ 0.32
Dividends declared, date	2013-12	2013-12
Dividends declared, payment date	2014-01	2014-01
Dividend declared, date	Mar. 31, 2014
Dividend declared, date to be paid	Apr. 15, 2014