| Cover | Sep. 09, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 9, 2020 |
| Entity File Number | 0-16469 |
| Entity Registrant Name | Inter Parfums, Inc. |
| Entity Central Index Key | 0000822663 |
| Entity Tax Identification Number | 13-3275609 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 551 Fifth Avenue |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10176 |
| City Area Code | 212 |
| Local Phone Number | 983.2640 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $.001 par value per share |
| Trading Symbol | IPAR |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
