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Termination of Burberry License (Details) (Burberry [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2013
Burberry [Member]
Licensing Agreements [Line Items]
Estimated inventory		$ 20
Inventory		18
Finished goods, maximum repurchase amount		4
Raw materials, maximum repurchase amount		6.5
Gain on license termination	$ 198.8
Gain on license termination, tax rate	36.00%

X

- Definition

Gain (loss) available to common shareholders related to the termination of a contract between the parties.

+ References

No definition available.

+ Details

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X

- Definition

Maximum amount of finished goods to be repurchased by the third party after the termination of a license agreement.

+ References

No definition available.

+ Details

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X

- Definition

Maximum amount of raw materials to be repurchased by the other party at the termination of a license agreement.

+ References

No definition available.

+ Details

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X

- Definition

Estimated inventory as of the balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

Tax rate on the gain from termination of a licensing agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	ipar_
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- Details

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X

- Definition

Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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