Total number of aggregate shares planned to grant to employees by entity.

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Total number of aggregate shares plan for grant to officers and managers of entity.

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The amount of shares purchased on the open market during the period for issuance to employees under the plan.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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 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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Number of shares purchased for issuance 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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Weighted average remaining contractual term for option awards outstanding, 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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Value of stock issued pursuant to acquisitions during the period.

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Share Based Payments (Details Narrative) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended		12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2018 € / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2016 € / shares shares	Mar. 31, 2019 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2016 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense					$ 960	$ 510
Allocated share-based compensation expense, effect on net income attributable to parent					$ 580	$ 320
Weighted average remaining contractual period of options outstanding					3 years 10 months 6 days
Weighted average remaining contractual life of options exercisable					2 years 3 months 29 days
Aggregate intrinsic value of options outstanding					$ 23,600
Aggregate intrinsic value of options exercisable					10,300
Unrecognized compensation cost related to stock options					$ 4,600
Weighted average grant date fair value \| $ / shares					$ 14.83	$ 10.72
Compensation cost					$ 500
Aggregate cost of shares acquired					$ 600
Shares acquired \| shares					14,276
Interparfums SA Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ownership percentage			73.00%	73.00%
Number of shares authorized \| shares	135,331	135,331	157,324	157,324			135,331
Weighted average grant date fair value \| $ / shares	$ 34.00		$ 22.00
Compensation cost	$ 4,900		$ 3,400
Value of shares purchased for award					$ 300		$ 3,700	$ 3,700
Number of shares purchased for award \| shares					7,324		150,000	150,000
Interparfums SA Subsidiary [Member] \| Euro [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value \| € / shares		€ 30.20		€ 18.56
Interparfums SA Subsidiary [Member] \| Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of shares plan for grant \| shares	26,600		15,100
Interparfums SA Subsidiary [Member] \| Officers And Managers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate shares plan for grant to officers and managers \| shares	133,000		133,000
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					6 years
Fair value of shares vested					$ 60	$ 40
Equity Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
Equity Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					5 years