Share-Based Payments (Schedule of Nonvested Option Activity) (Details)	3 Months Ended
Mar. 31, 2013
Number of Shares
Nonvested options, beginning balance	346,075
Nonvested options granted	9,000
Nonvested options vested or forfeited	(11,275)
Nonvested options, ending balance	343,800
Weighted Average Grant Date Fair Value
Nonvested options, beginning blance	5.02
Nonvested options granted	6.17
Nonvested options vested or forfeited	4.16
Nonvested options, ending balance	5.08

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

No definition available.

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

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
Balance Type:	na
Period Type:	duration

Number of nonvested shares outstanding.

No definition available.

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

Number of nonvested share-based payment award options that vested or were forfeited during the period.

No definition available.

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

Weighted average grant date fair value of nonvested options outstanding.

No definition available.

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

Name:	ipar_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract
Namespace Prefix:	ipar_
Data Type:	xbrli:stringItemType
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Period Type:	duration

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

No definition available.

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

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration