Percentage of the expected number of positions to be eliminated as a result of restructuring activities.

No definition available.

Name:	inph_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminatedPercent
Namespace Prefix:	inph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The quantified amount of the future effect on earnings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

+ Details

Name:	us-gaap_EffectOnFutureEarningsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Tax year being audited in the income tax examination, in CCYY format.

+ References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxExaminationYearUnderExamination
Namespace Prefix:	us-gaap_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

+ Details

Name:	us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The current portion of the amount recognized for uncertain tax positions as of the balance sheet date.

+ 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 210.5-02.20)

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

+ Details

Name:	us-gaap_LiabilityForUncertainTaxPositionsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB Topic 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

+ Details

Name:	us-gaap_RestructuringAndRelatedCostExpectedCost1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 10 - Subsequent Events (Details Textual) (USD $)	3 Months Ended	1 Months Ended	0 Months Ended
Note 10 - Subsequent Events (Details Textual) (USD $)	Mar. 31, 2015	May 05, 2015	Apr. 10, 2015
Liability for Uncertain Tax Positions, Current	$ 730,000
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	5,200,000
Subsequent Event [Member] \| Foreign Tax Authority [Member] \| Ministry of the Economy, Finance and Industry, France [Member] \| Tax Year 2011 [Member]
Income Tax Examination, Year under Examination		2011
Subsequent Event [Member] \| Foreign Tax Authority [Member] \| Ministry of the Economy, Finance and Industry, France [Member] \| Tax Year 2010 [Member]
Income Tax Examination, Year under Examination		2010
Subsequent Event [Member] \| Foreign Tax Authority [Member] \| Ministry of the Economy, Finance and Industry, France [Member] \| Tax Year 2009 [Member]
Income Tax Examination, Year under Examination		2009
Subsequent Event [Member] \| Minimum [Member] \| Operating Expense [Member]
Effect on Future Earnings, Amount			750,000
Subsequent Event [Member] \| Minimum [Member] \| One-time Termination Benefits [Member]
Restructuring and Related Cost, Expected Cost			50,000
Subsequent Event [Member] \| Minimum [Member]
Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent			15.00%
Subsequent Event [Member] \| Maximum [Member] \| Operating Expense [Member]
Effect on Future Earnings, Amount			1,500,000
Subsequent Event [Member] \| Maximum [Member] \| One-time Termination Benefits [Member]
Restructuring and Related Cost, Expected Cost			$ 150,000
Subsequent Event [Member] \| Maximum [Member]
Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent			25.00%