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v2.3.0.11

Subsequent Event (Details) (USD $) In Millions, unless otherwise specified | Jul. 20, 2011
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Subsequent Event |
Actual number of shares put back due to the settlement agreement with Samsung within 30 days (in shares) | 4.8
Actual value of shares put back within 30 days | $ 100.0
Period within which the payment for put right shares has to be made (in days) | 30

X
- Definition Represents the actual number of shares put back to the entity under the stock purchase agreement within 30 days. + Details
Name: | rmbs_ActualNumberOfSharesPutBack
Namespace Prefix: | rmbs
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the actual value for the shares under the put back facility of the stock purchase agreement within 30 days. + Details
Name: | rmbs_ActualValueOfSharesPutBack
Namespace Prefix: | rmbs
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the period from the receipt of the put notice to purchase and pay for the put right agreement shares. + Details
Name: | rmbs_PeriodWithinWhichPutBackRightStartToBeExercised
Namespace Prefix: | rmbs
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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