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Intangibles and Other Assets - Schedule of Intangibles and Other Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Intangibles And Other Assets [Abstract] |  |
Purchased patents and other purchased intangible assets | $ 4,605 us-gaap_FiniteLivedIntangibleAssetsGross | $ 5,731 us-gaap_FiniteLivedIntangibleAssetsGross
Other assets | 265 us-gaap_OtherAssets | 289 us-gaap_OtherAssets
Gross intangibles and other assets | 4,870 immr_IntangiblesAndOtherAssetsGross | 6,020 immr_IntangiblesAndOtherAssetsGross
Accumulated amortization of purchased patents and other purchased intangibles | (4,579)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (5,639)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Intangibles and other assets, net | $ 291 immr_IntangiblesAndOtherAssetsNet | $ 381 immr_IntangiblesAndOtherAssetsNet

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- Definition The gross aggregate carrying amounts as of the balance sheet date of intangible assets, and the gross aggregate carrying amounts as of the balance sheet date of assets not separately disclosed in the balance sheet. + References No definition available. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Also includes aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet due to materiality considerations. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 + Details
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