XML 26 R73.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Equity Incentive Plans and Stock-Based Compensation (Details 4) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014
Exercise price range $4.13 to $5.39 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 4.13 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Exercise price range, high end of range (in dollars per share) | $ 5.39 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Options Outstanding |
Number Outstanding (in shares) | 965,606 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Weighted Average Remaining Contractual Life (in years) | 7 years 6 months 22 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 4.39 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Options Exercisable |
Number Exercisable (in shares) | 111,457 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 4.81 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Exercise price range $5.46 to $5.46 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 5.46 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Exercise price range, high end of range (in dollars per share) | $ 5.46 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Options Outstanding |
Number Outstanding (in shares) | 1,146,916 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Weighted Average Remaining Contractual Life (in years) | 8 years 0 months 4 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 5.46 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Options Exercisable |
Number Exercisable (in shares) | 488,272 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 5.46 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Exercise Price Range $5.49 to $5.49 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 5.49 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Exercise price range, high end of range (in dollars per share) | $ 5.49 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Options Outstanding |
Number Outstanding (in shares) | 35,932 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Weighted Average Remaining Contractual Life (in years) | 8 years 1 month 28 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 5.49 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Options Exercisable |
Number Exercisable (in shares) | 14,341 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 5.49 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Exercise Price Range $5.63 to $5.63 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 5.63 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Exercise price range, high end of range (in dollars per share) | $ 5.63 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Options Outstanding |
Number Outstanding (in shares) | 1,229,750 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Weighted Average Remaining Contractual Life (in years) | 4 years 3 months 25 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 5.63 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Options Exercisable |
Number Exercisable (in shares) | 988,752 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 5.63 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Exercise Price Range $5.76 to $5.76 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 5.76 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Exercise price range, high end of range (in dollars per share) | $ 5.76 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Options Outstanding |
Number Outstanding (in shares) | 1,244,879 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Weighted Average Remaining Contractual Life (in years) | 7 years 6 months 0 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 5.76 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Options Exercisable |
Number Exercisable (in shares) | 384,739 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 5.76 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Exercise Price Range $6.39 to $8.55 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 6.39 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Exercise price range, high end of range (in dollars per share) | $ 8.55 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Options Outstanding |
Number Outstanding (in shares) | 1,298,963 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Weighted Average Remaining Contractual Life (in years) | 6 years 0 months 29 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 7.72 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Options Exercisable |
Number Exercisable (in shares) | 972,139 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 7.83 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Exercise Price Range $8.73 to $8.73 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 8.73 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Exercise price range, high end of range (in dollars per share) | $ 8.73 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Options Outstanding |
Number Outstanding (in shares) | 74,428 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Weighted Average Remaining Contractual Life (in years) | 8 years 10 months 2 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 8.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Options Exercisable |
Number Exercisable (in shares) | 15,982 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 8.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Exercise Price Range $8.76 to $8.76 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 8.76 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Exercise price range, high end of range (in dollars per share) | $ 8.76 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Options Outstanding |
Number Outstanding (in shares) | 1,564,545 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Weighted Average Remaining Contractual Life (in years) | 9 years 0 months 20 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 8.76 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Options Exercisable |
Number Exercisable (in shares) | 286,198 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 8.76 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Exercise Price Range $8.91 to $14.75 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 8.91 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Exercise price range, high end of range (in dollars per share) | $ 14.75 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Options Outstanding |
Number Outstanding (in shares) | 1,185,737 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Weighted Average Remaining Contractual Life (in years) | 6 years 11 months 23 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 12.02 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Options Exercisable |
Number Exercisable (in shares) | 428,013 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 12.64 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Exercise Price Range $14.86 to $40.80 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 14.86 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Exercise price range, high end of range (in dollars per share) | $ 40.80 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Options Outstanding |
Number Outstanding (in shares) | 2,694,890 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Weighted Average Remaining Contractual Life (in years) | 1 year 10 months 20 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 22.00 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Options Exercisable |
Number Exercisable (in shares) | 2,616,532 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 22.11 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Exercise Price Range $4.13 to $40.80 |
Exercise price range |
Exercise price range, low end of range (in dollars per share) | $ 4.13 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Exercise price range, high end of range (in dollars per share) | $ 40.80 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Options Outstanding |
Number Outstanding (in shares) | 11,441,646 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Weighted Average Remaining Contractual Life (in years) | 5 years 10 months 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 10.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Options Exercisable |
Number Exercisable (in shares) | 6,306,425 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Options Exercisable, Weighted Average Exercise Price (in dollars per share) | $ 13.41 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member

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

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

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

X
- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar13.31toDollar18.69Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar19.13toDollar21.51Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar21.95toDollar40.80Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar4.13toDollar40.80Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar4.13toDollar5.39Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar5.46toDollar5.46Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar5.49toDollar5.49Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar5.63toDollar5.63Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar5.76toDollar5.76Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar6.39toDollar7.79Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=rmbs_ExercisePriceRangeDollar8.11toDollar13.30Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |