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Share-Based Payments (Details) - $ / shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Nonvested Options, Number of Shares
Beginning of period	414,850
Granted	5,000
Vested or forfeited	(13,370)
End of period	406,480
Weighted Average Grant Date Fair Value
Beginning of period	$ 6.86
Granted	6.5	$ 6.73
Vested or forfeited	6.76
End of period	$ 6.86

X

- Definition

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

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	ipar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Period Type:	duration

X

- Definition

Number of non-vested options outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Definition

Weighted average grant-date fair value of non-vested options outstanding.

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
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X

- References

No definition available.

+ Details

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