Share-Based Payments (Schedule of Nonvested Option Activity) (Details)	9 Months Ended
Sep. 30, 2012
Number of Shares
Nonvested options, beginning balance	456,923
Nonvested options granted	4,500
Nonvested options vested or forfeited	(141,593)
Nonvested options, ending balance	319,830
Weighted Average Grant Date Fair Value
Nonvested options, beginning blance	4.4
Nonvested options granted	4.99
Nonvested options vested or forfeited	3.92
Nonvested options, ending balance	4.62

Number of nonvested share-based payment award options granted during the period.

No definition available.

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Weighted average grant date fair value of nonvested options granted during the period.

No definition available.

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Namespace Prefix:	ipar_
Data Type:	xbrli:sharesItemType
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Number of nonvested shares outstanding.

No definition available.

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Namespace Prefix:	ipar_
Data Type:	xbrli:sharesItemType
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Number of nonvested share-based payment award options that vested or were forfeited during the period.

No definition available.

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Namespace Prefix:	ipar_
Data Type:	xbrli:sharesItemType
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Weighted average grant date fair value of nonvested options outstanding.

No definition available.

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Namespace Prefix:	ipar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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Weighted average grant date fair value of nonvested options that were vested or forfeited during the period.

No definition available.

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Namespace Prefix:	ipar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration