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Commitments and Contingencies (Details) | Dec. 15, 2009 ft²
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Sunnyvale Facility, Original agreement |
Lease Commitments |
Total space under lease (in square feet) | 125,000

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | rmbs_OperatingLeaseCommitmentLineItems
Namespace Prefix: | rmbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | rmbs_OperatingLeaseArrangementAxis=rmbs_MtspellcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |