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Stockholders' Equity(details) (CRI) | 1 Months Ended
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Jun. 30, 2011
CRI |
Business Acquisition |
Purchase price paid (in shares) | 6,400,000
Number of shares used to satisfy tax withholding obligations | 161,000

X
- Details
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Namespace Prefix: | rmbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares acquired in a business combination which are used to satisfy the tax withholding obligations. + References No definition available. + Details
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Namespace Prefix: | rmbs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration