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Net Income Attributable to Inter Parfums, Inc. Common Shareholders (Tables) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Numerator for diluted earnings per share |  | $ | 60,249 |  |  | $ | 53,793 |  |  | $ | 41,594 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 31,451,093 |  |  |  | 31,307,991 |  |  |  | 31,172,285 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 237,607 |  |  |  | 214,380 |  |  |  | 132,816 |
Denominator for diluted earnings per share |  |  | 31,688,700 |  |  |  | 31,522,371 |  |  |  | 31,305,101 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Inter Parfums, Inc. |  |  |  |  |  |  |  |  |  |  |  |
common shareholders: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.92 |  |  | $ | 1.72 |  |  | $ | 1.33 |
Diluted |  |  | 1.90 |  |  |  | 1.71 |  |  |  | 1.33 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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