XML 78 R93.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Reporting, Geographic Information, and Significant Customers - Summary of Customers Comprising 10% or Greater of Outstanding Accounts and Other Receivable (Parenthetical) (Detail) (Maximum [Member], Outstanding Accounts and Other Receivable [Member])	Dec. 31, 2014
Maximum [Member] | Outstanding Accounts and Other Receivable [Member]
Concentration Risk [Line Items]
Outstanding accounts and other receivable, percentage	10.00%immr_EntityWideReceivableMajorCustomerPercentage / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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

- Details

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