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Share-Based Payments (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Term of employee stock options     6 years  
Employee stock options, fair value of shares vested     $ 30 $ 30
Decrease in income before income tax due to share-based payment expense $ 200 $ 230 590 690
Decrease in income attributable to Inter Parfums, Inc due to share-based payment expense 120 $ 130 $ 350 $ 380
Weighted average remaining contractual life of options outstanding     3 years 3 months  
Weighted average remaining contractual life of options exercisable     1 year 11 months 8 days  
Aggregate intrinsic value of options outstanding 2,600   $ 2,600  
Aggregate intrinsic value of options exercisable 1,700   1,700  
Unrecognized compensation cost related to stock options $ 2,100   $ 2,100  
Weighted average grant date fair value     $ 6.73 $ 8.47
Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     4 years  
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     5 years