Adjusted Stock share splits.

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The entire description of Covid 19.

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Represents the percentage of increase in annual dividend.

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Amount of cost capitalized for award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Percentage of vesting of award under share-based payment arrangement.

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Equity (Details) - USD ($)	1 Months Ended			3 Months Ended	12 Months Ended
Equity (Details) - USD ($)	Mar. 31, 2020	Oct. 31, 2019	Sep. 30, 2016	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2021	Feb. 28, 2021	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in Dollars per share)					$ 12.16
Covid 19, description	due to the potential impact on future net sales and operating results resulting from the COVID-19 pandemic, the estimated number of shares to be distributed, after forfeited shares, was reduced from 142,571 to 82,162. As the Company had already purchased shares in contemplation of the higher anticipated distribution, shares purchased in excess of the reduced anticipated distribution were transferred to treasury shares at the Interparfums SA level.
Percentage of increase in annual dividend		20.00%
Dividends payable, amount per share (in Dollars per share)		$ 1.32
Interparfums SA Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Original cost of grant			$ 3,900,000
Revaluation resulted in reduction of cost, description				The original cost of the grant was approximately $4.4 million, and the March 2020 revaluation resulted in a reduction of the cost, to approximately $2.5 million.
Reduction of cost, net				$ 300,000
Modification resulted revised cost					$ 3,800,000
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested					1,700,000	$ 1,400,000
Aggregate intrinsic value of options outstanding					$ 8.7
Term					5 years
Weighted average grant date fair value (in Dollars per share)					$ 12.16	$ 14.14	$ 14.31
Options exercisable, weighted average exercise price (in Dollars per share)					$ 43.35
Weighted average remaining contractual life of options outstanding, options exercisable					2 years 7 months 17 days
Aggregate intrinsic value of exercisable options					$ 6,900,000
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in Shares)					580,715
Aggregate intrinsic value of options outstanding					$ 4.4
Maximum [Member] \| Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period					5 years
Minimum [Member] \| Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period					4 years
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends payable, amount per share (in Dollars per share)								$ 0.25
Interparfums SA Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment percentage			73.00%
Adjusted for stock splits (in Shares)					132,032
Interparfums SA Subsidiary [Member] \| Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjusted for stock splits (in Shares)							26,600
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjusted Stock share splits (in Shares)										172,851
Employees [Member] \| Interparfums SA Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjusted for stock splits (in Shares)			15,100
Officers And Managers [Member] \| Interparfums SA Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options outstanding			$ 133,000
Adjusted for stock splits (in Shares)							133,000
Board of Directos [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends payable, amount per share (in Dollars per share)									$ 1.00