XML 102 R69.htm IDEA: XBRL DOCUMENT v2.4.1.9
Commitments and Contingencies (Details 2) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jun. 03, 2011
installment
Jul. 10, 2009
Jun. 29, 2009
Aug. 16, 2013
Contractual obligations                
Total $ 195,605,000rmbs_ContractualAmountTotal [1]              
2015 19,387,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear [1]              
2016 11,220,000rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear [1]              
2017 9,188,000rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear [1]              
2018 146,339,000rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear [1]              
2019 6,602,000rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear [1]              
Thereafter 2,869,000rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear [1]              
Unrecognized Tax Benefits 19,903,000us-gaap_UnrecognizedTaxBenefits 18,794,000us-gaap_UnrecognizedTaxBenefits 16,773,000us-gaap_UnrecognizedTaxBenefits 16,610,000us-gaap_UnrecognizedTaxBenefits        
Unrecognized tax benefits, reduction of long-term deferred tax assets, before federal tax benefit 17,800,000rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross 12,600,000rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross            
Unrecognized tax benefits included in long-term income taxes payable 2,100,000rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent 6,200,000rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent            
Terms of noncancellable license agreement, minimum (in years) 1 year              
Rent expense 2,600,000us-gaap_LeaseAndRentalExpense 3,100,000us-gaap_LeaseAndRentalExpense 4,100,000us-gaap_LeaseAndRentalExpense          
Property, Plant and Equipment Cost Capitalization Amount 40,300,000rmbs_PropertyPlantAndEquipmentCostCapitalizationAmount 40,320,000rmbs_PropertyPlantAndEquipmentCostCapitalizationAmount            
CRI                
Contractual obligations                
Number of installments for payment of retention bonus         3rmbs_BusinessAcquisitionRetentionBonusPayableTotalNumberOfInstallments
/ rmbs_ContractualObligationAxis
= rmbs_CriMember		      
Approximate installment amount of retention bonus         16,700,000rmbs_BusinessAcquisitionRetentionBonusPayablePerInstallmentAmount
/ rmbs_ContractualObligationAxis
= rmbs_CriMember		      
Imputed financing obligation                
Contractual obligations                
Total 34,387,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
2015 6,011,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
2016 6,156,000rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
2017 6,302,000rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
2018 6,447,000rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
2019 6,602,000rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
Thereafter 2,869,000rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_ImputedFinancingObligationMember		 [1],[2]              
Leases and other contractual obligations                
Contractual obligations                
Total 9,839,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
2015 6,403,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
2016 1,763,000rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
2017 1,333,000rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
2018 340,000rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
2019 0rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
Thereafter 0rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_LeasesAcquiredInPlaceMember		 [1]              
Software licenses                
Contractual obligations                
Total 7,098,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
2015 5,350,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
2016 1,748,000rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
2017 0rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
2018 0rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
2019 0rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
Thereafter 0rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_SoftwareLicenseArrangementMember		 [1],[3]              
Acquisition retention bonus                
Contractual obligations                
Total 70,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
2015 70,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
2016 0rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
2017 0rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
2018 0rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
2019    [1],[4]              
Thereafter 0rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_BusinessAcquisitionRetentionBonusPayableMember		 [1],[4]              
Convertible notes                
Contractual obligations                
Total 138,000,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
2015 0rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
2016 0rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
2017 0rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
2018 138,000,000rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
2019 0rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
Thereafter 0rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= us-gaap_ConvertibleNotesPayableMember		 [1]              
Interest payments related to convertible notes                
Contractual obligations                
Total 6,211,000rmbs_ContractualAmountTotal
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
2015 1,553,000rmbs_ContractualObligationPaymentsDueFirstFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
2016 1,553,000rmbs_ContractualObligationPaymentsDueSecondFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
2017 1,553,000rmbs_ContractualObligationPaymentsDueThirdFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
2018 1,552,000rmbs_ContractualObligationPaymentsDueFourthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
2019 0rmbs_ContractualObligationPaymentsDueFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
Thereafter 0rmbs_ContractualObligationPaymentsDueAfterFifthFullFiscalYear
/ rmbs_ContractualObligationAxis
= rmbs_InterestPaymentRelatedToConvertibleNotesMember		 [1]              
Convertible notes                
Contractual obligations                
Face Value 138,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		 310,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		            
Convertible notes | 5% Convertible Senior Notes due 2014                
Contractual obligations                
Face Value 0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_Senior5PercentConvertibleNotesDue2014Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		 172,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_Senior5PercentConvertibleNotesDue2014Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		       22,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_Senior5PercentConvertibleNotesDue2014Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		 150,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_Senior5PercentConvertibleNotesDue2014Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		  
Convertible notes | Senior, One Point One Two Five Percent Convertible Notes Due Two Thousand Eighteen [Member]                
Contractual obligations                
Face Value $ 138,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_SeniorOnePointOneTwoFivePercentConvertibleNotesDueTwoThousandEighteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		 $ 138,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_SeniorOnePointOneTwoFivePercentConvertibleNotesDueTwoThousandEighteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember		           $ 138,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= rmbs_SeniorOnePointOneTwoFivePercentConvertibleNotesDueTwoThousandEighteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
[1] The above table does not reflect possible payments in connection with uncertain tax benefits of approximately $19.9 million including $17.8 million recorded as a reduction of long-term deferred tax assets and $2.1 million in long-term income taxes payable, as of December 31, 2014. As noted below in Note 17, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.
[2] With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the contractual obligations table and the amount reflected on the Consolidated Balance Sheets are the interest on the imputed financing obligation and the estimated common area expenses over the future periods. The amount includes the amended Ohio lease and the amended Sunnyvale lease.
[3] The Company has commitments with various software vendors for non-cancellable agreements generally having terms longer than one year.
[4] In connection with acquisitions, the Company is obligated to pay retention bonuses to certain employees and contractors, subject to certain eligibility and acceleration provisions including the condition of employment. The last payment of CRD retention bonuses was paid in cash during 2014.