XML 40 R31.htm IDEA: XBRL DOCUMENT
v3.5.0.2

SIGNIFICANT ACCOUNTING POLICIES - ADDITIONAL INFORMATION (Detail) | 6 Months Ended
--- | ---
Jun. 30, 2016 Segment
Accounting Policies [Abstract] |
Number of reporting segments | 1
Number of operating segments | 1
Period of royalties notification, minimum | 30 days
Period of royalties notification, maximum | 45 days

X
- Definition The maximum amount of period of time that royalty agreements generally require licensees to give notification of royalties from the end of a quarter. + References No definition available. + Details
Name: | immr_PeriodOfRoyaltiesNotificationMaximum
Namespace Prefix: | immr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum period of time that royalty agreements generally require licensees to give notification of royalties from the end of a quarter. + References No definition available. + Details
Name: | immr_PeriodOfRoyaltiesNotificationMinimum
Namespace Prefix: | immr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
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