XML 96 R85.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Reporting, Geographic Information, and Significant Customers - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014 Segment	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reporting segment	1us-gaap_NumberOfReportableSegments
Maximum [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets outside United States of America	10.00%immr_PercentageOfLongLivedAssetsOutsideCountry / us-gaap_RangeAxis = us-gaap_MaximumMember	10.00%immr_PercentageOfLongLivedAssetsOutsideCountry / us-gaap_RangeAxis = us-gaap_MaximumMember	10.00%immr_PercentageOfLongLivedAssetsOutsideCountry / us-gaap_RangeAxis = us-gaap_MaximumMember
Maximum [Member] | Net Revenues [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue by major customer	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Maximum [Member] | Outstanding Accounts and Other Receivable [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Outstanding accounts and other receivable, percentage	10.00%immr_EntityWideReceivableMajorCustomerPercentage / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Minimum [Member] | Net Revenues [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue by major customer	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Minimum [Member] | Outstanding Accounts and Other Receivable [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Outstanding accounts and other receivable, percentage	10.00%immr_EntityWideReceivableMajorCustomerPercentage / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_RangeAxis = us-gaap_MinimumMember

X

- Definition

The amount of accounts receivable from a particular customer as a percentage of entity wide accounts and other receivables.

+ References

No definition available.

+ Details

Name:	immr_EntityWideReceivableMajorCustomerPercentage
Namespace Prefix:	immr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of long-term assets that are outside of a particular country.

+ References

No definition available.

+ Details

Name:	immr_PercentageOfLongLivedAssetsOutsideCountry
Namespace Prefix:	immr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: