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Net Income Attributable to Inter Parfums, Inc. Common Shareholders (Tables)
3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   Three months ended 
(In thousands, except per share data)  March 31, 
   2020   2019 
Numerator:        
Net income attributable to Inter Parfums, Inc.  $10,059   $18,894 
Denominator:          
Weighted average shares   31,530    31,431 
Effect of dilutive securities:          
Stock options   178    248 
Denominator for diluted earnings per share   31,708    31,679 
           
Earnings per share:          
Net income attributable to Inter Parfums, Inc.          
common shareholders:          
Basic  $0.32   $0.60 
Diluted   0.32    0.60