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v2.3.0.11

Basis of Presentation (Details) | 6 Months Ended
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Jun. 30, 2011
Basis of Presentation |
Percentage of ownership for cost method investment, maximum (as a percent) | 20.00%

X
- Definition Represents the maximum percentage of investment in other entities which are being accounted for by using the cost method. + Details
Name: | rmbs_CostMethodInvestmentOwnershipPercentageMaximum
Namespace Prefix: | rmbs
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration