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Equity (Details 1) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Income before income taxes $ 95,859 $ 78,065 $ 67,074
Net income attributable to Inter Parfums, Inc. $ 53,793 $ 41,594 $ 33,331
Diluted earnings per share attributable to Inter Parfums, Inc. $ 1.71 $ 1.33 $ 1.07
Operating Income (Loss) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Income before income taxes $ 2,200 $ 2,100 $ 1,200
Net income attributable to Inter Parfums, Inc. $ 1,390 $ 1,150 $ 700
Diluted earnings per share attributable to Inter Parfums, Inc. $ 0.04 $ 0.04 $ 0.02