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Equity (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2016 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Apr. 30, 2020 | Sep. 30, 2019
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Weighted average grant date fair value (in Dollars per share) |  |  |  | $ 14.14 |  |  |  |
Percentage of Increase in Annual Dividend | 20.00% |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared (in Dollars per share) | $ 1.32 |  |  | $ 1.16 | $ 0.91 | $ 0.72 |  |
Dividends Payable | $ 10.4 |  |  |  |  |  |  |
Dividends Payable, Amount Per Share (in Dollars per share) | $ 0.33 |  |  |  |  |  |  |
Interparfums SA Subsidiary [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Percentage of Increase in Annual Dividend |  |  | 73.00% |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  | 26,600 | 133,000 |  | 26,600 |  |  | 172,851
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  | $ 4.4 | $ 3.9 |  |  |  |  |
Number of shares to be distributed into account employee turnover (in Shares) |  |  |  |  | 142,379 |  |  |
Acquisition, description |  |  |  | During the year ended December 31, 2019, the Company acquired 131,613 shares at an aggregate cost of $5.8 million. |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Dividends Payable, Amount Per Share (in Dollars per share) |  |  |  |  |  |  | $ 0.33 |
Equity Option [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Fair value of shares vested |  |  |  | $ 1.4 | $ 1.1 |  |  |
Number of shares available for grant (in Shares) |  |  |  | 573,695 |  |  |  |
Aggregate intrinsic value of options outstanding |  |  |  | $ 18.7 |  |  |  |
Unrecognized compensation cost related to stock options |  |  |  | $ 6.0 |  |  |  |
Unrecognized compensation cost, recognition period |  |  |  | 5 years |  |  |  |
Weighted average grant date fair value (in Dollars per share) |  |  |  | $ 14.14 | $ 14.31 | $ 9.82 |  |
Options exercisable, weighted average exercise price (in Dollars per share) |  |  |  | $ 35.05 |  |  |  |
Weighted average remaining contractual life of options outstanding, options exercisable |  |  |  | 2 years 7 months 13 days |  |  |  |
Aggregate intrinsic value of exercisable options |  |  |  | $ 11.4 |  |  |  |
Equity Option [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  | 4 years |  |  |  |
Employees [Member] | Interparfums SA Subsidiary [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  |  | 15,100 |  |  |  |  |
Officers And Managers [Member] | Interparfums SA Subsidiary [Member] |  |  |  |  |  |  |  |
Equity (Details) - Schedule of effect of share-based payment expenses [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  | 133,000 |  |  | 133,000 |  |  |

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