$RMBS
RAMBUS INC Stock $rmbs

$rmbs Overview Financials Valuation SEC Filings Company Website

2014 Q4 Form 10-K Financial Statement

#000091727316000027 Filed on February 19, 2016

Income Statement

Concept	2014 Q4	2014 Q3	2014 Q2
Revenue	$72.04M	$69.71M	$76.52M
YoY Change	-1.88%	-4.89%	32.11%
Cost Of Revenue	$10.70M	$10.54M	$10.64M
YoY Change	2.88%	17.66%	44.43%
Gross Profit	$61.30M	$59.17M	$65.88M
YoY Change	-2.85%	-8.03%	30.32%
Gross Profit Margin	85.09%	84.88%	86.1%
Selling, General & Admin	$19.10M	$18.20M	$18.62M
YoY Change	3.24%	-2.66%	31.71%
% of Gross Profit	31.16%	30.76%	28.26%
Research & Development	$28.40M	$27.01M	$27.67M
YoY Change	5.97%	-1.96%	-10.1%
% of Gross Profit	46.33%	45.65%	42.0%
Depreciation & Amortization	$9.500M	$10.10M	$10.30M
YoY Change	-16.67%	-10.62%	-5.5%
% of Gross Profit	15.5%	17.07%	15.63%
Operating Expenses	$47.70M	$45.21M	$46.29M
YoY Change	5.3%	-2.24%	3.06%
Operating Profit	$17.59M	$14.47M	$20.10M
YoY Change	182.99%	59.6%	250.0%
Interest Expense	-$2.900M	$3.059M	$8.770M
YoY Change	-70.41%	-64.23%	18.1%
% of Operating Profit	-16.49%	21.14%	43.62%
Other Income/Expense, Net		-$3.608M	-$8.666M
YoY Change		-57.48%	-2.02%
Pretax Income	$14.70M	$10.86M	$11.44M
YoY Change	-508.33%	1775.65%	-468.85%
Income Tax	$6.800M	$5.347M	$6.395M
% Of Pretax Income	46.26%	49.24%	55.91%
Net Earnings	$7.841M	$5.513M	$5.043M
YoY Change	-180.2%	-196.3%	-164.29%
Net Earnings / Revenue	10.88%	7.91%	6.59%
Basic Earnings Per Share		$0.05	$0.04
Diluted Earnings Per Share	$66.16K	$0.05	$0.04
COMMON SHARES
Basic Shares Outstanding	115.0M shares	114.5M shares	114.1M shares
Diluted Shares Outstanding	117.6M shares	118.2M shares	117.4M shares

Balance Sheet

Concept	2014 Q4	2014 Q3	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$300.1M	$271.1M	$246.4M
YoY Change	-22.59%	-26.01%	19.84%
Cash & Equivalents	$154.1M	$125.7M	$99.57M
Short-Term Investments	$146.0M	$145.4M	$146.9M
Other Short-Term Assets	$8.700M	$9.400M	$8.400M
YoY Change	2.35%	49.21%	-11.58%
Inventory
Prepaid Expenses
Receivables	$6.001M	$5.099M	$12.50M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$314.8M	$285.6M	$267.3M
YoY Change	-20.97%	-23.7%	23.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$64.02M	$65.90M	$67.41M
YoY Change	-11.87%	-9.44%	-11.1%
Goodwill	$116.9M	$116.9M	$116.9M
YoY Change	0.0%	0.0%	-6.46%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$2.612M	$2.542M	$3.090M
YoY Change	-25.33%	-33.12%	79.86%
Total Long-Term Assets	$273.4M	$281.6M	$290.4M
YoY Change	-13.2%	-14.86%	-16.24%
TOTAL ASSETS
Total Short-Term Assets	$314.8M	$285.6M	$267.3M
Total Long-Term Assets	$273.4M	$281.6M	$290.4M
Total Assets	$588.3M	$567.2M	$557.7M
YoY Change	-17.54%	-19.55%	-0.92%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.962M	$5.697M	$5.465M
YoY Change	-0.56%	-4.52%	3.11%
Accrued Expenses	$14.80M	$11.80M	$14.40M
YoY Change	-55.69%	-62.42%	-53.99%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$0.00
YoY Change	-100.0%	-100.0%	-100.0%
Total Short-Term Liabilities	$34.66M	$26.28M	$30.19M
YoY Change	-83.72%	-87.14%	-84.75%
LONG-TERM LIABILITIES
Long-Term Debt	$154.2M	$152.8M	$151.5M
YoY Change	3.49%	3.24%	281.61%
Other Long-Term Liabilities	$5.078M	$8.641M	$7.863M
YoY Change	6.48%	184.34%	90.99%
Total Long-Term Liabilities	$5.078M	$8.641M	$7.863M
YoY Change	6.48%	184.34%	90.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$34.66M	$26.28M	$30.19M
Total Long-Term Liabilities	$5.078M	$8.641M	$7.863M
Total Liabilities	$196.7M	$189.6M	$191.4M
YoY Change	-47.3%	-47.62%	-22.92%
SHAREHOLDERS EQUITY
Retained Earnings	-$761.5M	-$769.4M	-$774.9M
YoY Change	-3.33%	-1.1%	0.34%
Common Stock	$1.154B	$1.147B	$1.142B
YoY Change	2.24%	2.31%	5.01%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$391.6M	$377.6M	$366.3M
YoY Change
Total Liabilities & Shareholders Equity	$588.3M	$567.2M	$557.7M
YoY Change	-17.54%	-19.55%	-0.92%

Cashflow Statement

Concept	2014 Q4	2014 Q3	2014 Q2
OPERATING ACTIVITIES
Net Income	$7.841M	$5.513M	$5.043M
YoY Change	-180.2%	-196.3%	-164.29%
Depreciation, Depletion And Amortization	$9.500M	$10.10M	$10.30M
YoY Change	-16.67%	-10.62%	-5.5%
Cash From Operating Activities	$26.10M	$23.90M	$10.00M
YoY Change	29.21%	-6.64%	-199.01%
INVESTING ACTIVITIES
Capital Expenditures	-$1.600M	-$1.300M	-$1.200M
YoY Change	33.33%	116.67%	-45.45%
Acquisitions
YoY Change
Other Investing Activities	$2.700M	$1.100M	-$87.70M
YoY Change	-70.97%	-113.75%	-1285.14%
Cash From Investing Activities	$1.100M	-$300.0K	-$88.80M
YoY Change	-86.59%	-96.55%	-1807.69%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.400M	2.400M	-168.1M
YoY Change	-39.13%	-98.23%	-5703.33%
NET CHANGE
Cash From Operating Activities	26.10M	23.90M	10.00M
Cash From Investing Activities	1.100M	-300.0K	-88.80M
Cash From Financing Activities	1.400M	2.400M	-168.1M
Net Change In Cash	28.60M	26.00M	-246.9M
YoY Change	-6.84%	-82.98%	12894.74%
FREE CASH FLOW
Cash From Operating Activities	$26.10M	$23.90M	$10.00M
Capital Expenditures	-$1.600M	-$1.300M	-$1.200M
Free Cash Flow	$27.70M	$25.20M	$11.20M
YoY Change	29.44%	-3.82%	-241.77%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000917273
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	109514426	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	1500000000	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	RAMBUS INC
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2014Q4	rmbs	Cash Cash Equivalents And Short Term Investments Amortized Cost Disclosure CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure	300222000	USD
CY2015Q4	rmbs	Cash Cash Equivalents And Short Term Investments Amortized Cost Disclosure CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure	287894000	USD
CY2014Q4	rmbs	Cash Cash Equivalents And Short Term Investments Fair Value Disclosure CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure	300109000	USD
CY2015Q4	rmbs	Cash Cash Equivalents And Short Term Investments Fair Value Disclosure CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure	287706000	USD
CY2014Q4	rmbs	Cash Cash Equivalents And Short Term Investments Unrealized Gains CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains	1000	USD
CY2015Q4	rmbs	Cash Cash Equivalents And Short Term Investments Unrealized Gains CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains	0	USD
CY2014Q4	rmbs	Cash Cash Equivalents And Short Term Investments Unrealized Losses CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses	114000	USD
CY2015Q4	rmbs	Cash Cash Equivalents And Short Term Investments Unrealized Losses CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses	188000	USD
CY2014Q4	rmbs	Cash Fair Value Disclosure CashFairValueDisclosure	29188000	USD
CY2015Q4	rmbs	Cash Fair Value Disclosure CashFairValueDisclosure	34969000	USD
CY2015	rmbs	Cost Method Investment Maximum Ownership Percentage CostMethodInvestmentMaximumOwnershipPercentage	0.20
CY2014Q4	rmbs	Current And Long Term Imputed Financing Obligation CurrentAndLongTermImputedFinancingObligation	39500000	USD
CY2015Q4	rmbs	Current And Long Term Imputed Financing Obligation CurrentAndLongTermImputedFinancingObligation	39300000	USD
CY2014Q4	rmbs	Deferred Tax Assets Depreciation And Amortization DeferredTaxAssetsDepreciationAndAmortization	29099000	USD
CY2015Q4	rmbs	Deferred Tax Assets Depreciation And Amortization DeferredTaxAssetsDepreciationAndAmortization	30019000	USD
CY2014Q4	rmbs	Deferred Tax Assets Net Before Deducting Valuation Allowance DeferredTaxAssetsNetBeforeDeductingValuationAllowance	189399000	USD
CY2015Q4	rmbs	Deferred Tax Assets Net Before Deducting Valuation Allowance DeferredTaxAssetsNetBeforeDeductingValuationAllowance	183202000	USD
CY2014Q4	rmbs	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	8092000	USD
CY2015Q4	rmbs	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	6044000	USD
CY2013	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	1800000	USD
CY2014	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	1900000	USD
CY2015	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	2100000	USD
CY2015	rmbs	Defined Contribution Plan Employer Match Employee Contribution Level One DefinedContributionPlanEmployerMatchEmployeeContributionLevelOne	0.06
CY2015	rmbs	Defined Contribution Plan Employer Match Level One DefinedContributionPlanEmployerMatchLevelOne	0.50
CY2013	rmbs	Dilutive Potential Securities Excludedfrom Computationof Eps Amount Dueto Loss DilutivePotentialSecuritiesExcludedfromComputationofEPSAmountDuetoLoss	3300000	shares
CY2013	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.008
CY2014	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.002
CY2015	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.005
CY2013	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	1.604
CY2014	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	0.386
CY2015	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	0.341
CY2013	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	4400000	USD
CY2014	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	4500000	USD
CY2015	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	4500000	USD
CY2014Q4	rmbs	Gross Unrealized Gain On Securities And Cash GrossUnrealizedGainOnSecuritiesAndCash	1000	USD
CY2015Q4	rmbs	Gross Unrealized Gain On Securities And Cash GrossUnrealizedGainOnSecuritiesAndCash	0	USD
CY2014Q4	rmbs	Gross Unrealized Loss On Securities And Cash GrossUnrealizedLossOnSecuritiesAndCash	114000	USD
CY2015Q4	rmbs	Gross Unrealized Loss On Securities And Cash GrossUnrealizedLossOnSecuritiesAndCash	188000	USD
CY2013	rmbs	Impairment Charge For Tangible And Intangible Assets ImpairmentChargeForTangibleAndIntangibleAssets	9700000	USD
CY2013	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	17751000	USD
CY2014	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	0	USD
CY2015	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	0	USD
CY2013	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	17751000	USD
CY2014	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	0	USD
CY2015	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	0	USD
CY2014Q4	rmbs	Long Term Imputed Financing Obligation LongTermImputedFinancingObligation	39063000	USD
CY2015Q4	rmbs	Long Term Imputed Financing Obligation LongTermImputedFinancingObligation	38625000	USD
CY2015	rmbs	Maximum Original Maturity Period To Be Classified As Cash And Cash Equivalents MaximumOriginalMaturityPeriodToBeClassifiedAsCashAndCashEquivalents	P3M
CY2013	rmbs	Operating Expenses Segment OperatingExpensesSegment	97451000	USD
CY2014	rmbs	Operating Expenses Segment OperatingExpensesSegment	102530000	USD
CY2015	rmbs	Operating Expenses Segment OperatingExpensesSegment	108983000	USD
CY2013	rmbs	Payments Under Installment PaymentsUnderInstallment	1829000	USD
CY2014	rmbs	Payments Under Installment PaymentsUnderInstallment	1773000	USD
CY2015	rmbs	Payments Under Installment PaymentsUnderInstallment	1717000	USD
CY2013	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	178000	USD
CY2014	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	322000	USD
CY2015	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	478000	USD
CY2014Q4	rmbs	Property Plant And Equipment Cost Capitalization Amount PropertyPlantAndEquipmentCostCapitalizationAmount	40320000	USD
CY2015Q4	rmbs	Property Plant And Equipment Cost Capitalization Amount PropertyPlantAndEquipmentCostCapitalizationAmount	40320000	USD
CY2015	rmbs	Revenue Recognition Number Of Types Of Royalty Revenue RevenueRecognitionNumberOfTypesOfRoyaltyRevenue	2
CY2013	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	174050000	USD
CY2014	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	194028000	USD
CY2015	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	187295000	USD
CY2013	rmbs	Segmentreconcilingitems Segmentreconcilingitems	151586000	USD
CY2014	rmbs	Segmentreconcilingitems Segmentreconcilingitems	118682000	USD
CY2015	rmbs	Segmentreconcilingitems Segmentreconcilingitems	115875000	USD
CY2009Q2	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Additional Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalNumberOfSharesAuthorized	6500000	shares
CY2012Q2	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Additional Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalNumberOfSharesAuthorized	6500000	shares
CY2015	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Specific Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate	0.15
CY2015	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Options To Derive Shares Available For Grant Denominator ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToDeriveSharesAvailableForGrantDenominator	1	denominator
CY2015	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Options To Derive Shares Available For Grant Numerator ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToDeriveSharesAvailableForGrantNumerator	1.5	numerator
CY2010Q1	rmbs	Stock Repurchase Program Additional Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramAdditionalNumberOfSharesAuthorizedToBeRepurchased	12500000	shares
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CY2014Q4	rmbs	Stock Repurchase Program Commencement To Date Repurchased Value StockRepurchaseProgramCommencementToDateRepurchasedValue	428900000	USD
CY2015	rmbs	Termsof Noncancellable License Agreement Minimum TermsofNoncancellableLicenseAgreementMinimum	P1Y
CY2014	rmbs	Total Proceeds From Sale Of Intangible Assets TotalProceedsFromSaleOfIntangibleAssets	4400000	USD
CY2014Q4	rmbs	Unrecognized Tax Benefits Accrued Income Taxes Noncurrent UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent	2100000	USD
CY2015Q4	rmbs	Unrecognized Tax Benefits Accrued Income Taxes Noncurrent UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent	2200000	USD
CY2014Q4	rmbs	Unrecognized Tax Benefits Deferred Tax Assets Noncurrent Gross UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross	17800000	USD
CY2015Q4	rmbs	Unrecognized Tax Benefits Deferred Tax Assets Noncurrent Gross UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross	18600000	USD
CY2015	rmbs	Unsettled Forward Contract Indexedto Issuers Stock Classifiedwithin Stock UnsettledForwardContractIndexedtoIssuersStockClassifiedwithinStock	20000000	USD
CY2015	rmbs	Upfront Payment Related Fees Under Accelerated Stock Repurchase Program UpfrontPaymentRelatedFeesUnderAcceleratedStockRepurchaseProgram	100113000	USD
CY2015	rmbs	Upfront Payment Under Accelerated Stock Repurchase Program UpfrontPaymentUnderAcceleratedStockRepurchaseProgram	100000000	USD
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CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	67655000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-488000	USD
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CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	86000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	95000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-402000	USD
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CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1153435000	USD
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1130368000	USD
CY2015	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-5312000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	29542000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14981000	USD
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14730000	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15096000	USD
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	19296000	USD
CY2014	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	14763000	USD
CY2015	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	6372000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28909000	USD
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	26618000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	25074000	USD
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CY2015Q4	us-gaap	Assets Assets	719504000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	314838000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	315590000	USD
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CY2014	us-gaap	Available For Sale Equity Securities Gross Unrealized Gain AvailableForSaleEquitySecuritiesGrossUnrealizedGain	0	USD
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CY2015Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	252737000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	143942000	USD
CY2014Q4	us-gaap	Cash Cash	29188000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	338696000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	154126000	USD
CY2015Q4	us-gaap	Cash Cash	34969000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148984000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	143764000	USD
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	115161675	shares
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	109287591	shares
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	115161675	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	109287591	shares
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	115000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	109000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-33753000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26104000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	212163000	USD
CY2013	us-gaap	Contracts Revenue ContractsRevenue	7390000	USD
CY2014	us-gaap	Contracts Revenue ContractsRevenue	25037000	USD
CY2015	us-gaap	Contracts Revenue ContractsRevenue	33863000	USD
CY2015Q4	us-gaap	Contractual Obligation ContractualObligation	180846000	USD
CY2015Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	0	USD
CY2015Q4	us-gaap	Contractual Obligation Due In Fifth Year ContractualObligationDueInFifthYear	2869000	USD
CY2015Q4	us-gaap	Contractual Obligation Due In Fourth Year ContractualObligationDueInFourthYear	6812000	USD
CY2015Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	14457000	USD
CY2015Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	9973000	USD
CY2015Q4	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	146735000	USD
CY2014Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	115089000	USD
CY2015Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	120901000	USD
CY2014Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	115089000	USD
CY2015Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	120901000	USD
CY2014Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	0	USD
CY2015Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	0	USD
CY2013	us-gaap	Cost Of Revenue CostOfRevenue	33215000	USD
CY2014	us-gaap	Cost Of Revenue CostOfRevenue	41947000	USD
CY2015	us-gaap	Cost Of Revenue CostOfRevenue	45344000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	249037000	USD
CY2014Q1	us-gaap	Costs And Expenses CostsAndExpenses	55099000	USD
CY2014Q2	us-gaap	Costs And Expenses CostsAndExpenses	56414000	USD
CY2014Q3	us-gaap	Costs And Expenses CostsAndExpenses	55244000	USD
CY2014Q4	us-gaap	Costs And Expenses CostsAndExpenses	54455000	USD
CY2014	us-gaap	Costs And Expenses CostsAndExpenses	221212000	USD
CY2015Q1	us-gaap	Costs And Expenses CostsAndExpenses	55022000	USD
CY2015Q2	us-gaap	Costs And Expenses CostsAndExpenses	57258000	USD
CY2015Q3	us-gaap	Costs And Expenses CostsAndExpenses	56139000	USD
CY2015Q4	us-gaap	Costs And Expenses CostsAndExpenses	56439000	USD
CY2015	us-gaap	Costs And Expenses CostsAndExpenses	224858000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19319000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19386000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20497000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	446000	USD
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1640000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	443000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	47000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	713000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	609000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2200000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2337000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-170798000	USD
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	220000	USD
CY2014	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-27000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	25000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1619000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1829000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-173453000	USD
CY2014Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	4133000	USD
CY2015Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	5780000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-501000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1933000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	197491000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	189246000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	162485000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	187000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	536000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	162485000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	12307000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	11746000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	116658000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	117078000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	29511000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	23176000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	9916000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	7227000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	193874000	USD
CY2014	us-gaap	Depreciation Depreciation	13625000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20717000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	4475000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	1131000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	4067000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	0	USD
CY2015	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.60
CY2013	us-gaap	Depreciation Depreciation	15451000	USD
CY2015	us-gaap	Depreciation Depreciation	12379000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.30
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.84
CY2013	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.30
CY2014Q1	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.07
CY2014Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.04
CY2014Q3	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.05
CY2014Q4	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.07
CY2014	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.23
CY2015Q1	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.08
CY2015Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.06
CY2015Q3	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	1.56
CY2015Q4	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	0.12
CY2015	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	1.84
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.30
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.80
CY2013	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.30
CY2014Q1	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.07
CY2014Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.04
CY2014Q3	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.05
CY2014Q4	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.07
CY2014	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.22
CY2015Q1	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.08
CY2015Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.06
CY2015Q3	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	1.52
CY2015Q4	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	0.11
CY2015	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	1.80
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-138000	USD
CY2014	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-97000	USD
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-117000	USD
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.808
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.479
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-2.510
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.350
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	2.523
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.134
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2.878
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.041
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.033
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.010
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.015
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-1.633
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.025
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.004
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.025
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.014
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.053
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.010
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-0.387
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-0.341
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.367
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.061
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.023
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	14840000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	12278000	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	300000	USD
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	481000	USD
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	747000	USD
CY2013	us-gaap	Fair Value Inputs Long Term Revenue Growth Rate FairValueInputsLongTermRevenueGrowthRate	0.03
CY2014	us-gaap	Fair Value Inputs Long Term Revenue Growth Rate FairValueInputsLongTermRevenueGrowthRate	0.03
CY2015	us-gaap	Fair Value Inputs Long Term Revenue Growth Rate FairValueInputsLongTermRevenueGrowthRate	0.03
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	127343000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	152448000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1887000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	24311000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1743000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1789000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	10827000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	23709000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	216714000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	216714000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	89371000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	64266000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1024000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	3529000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	3670000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	1388000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	3529000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	3686000	USD
CY2013	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	535000	USD
CY2014	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	2040000	USD
CY2015	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	2040000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	116899000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	116899000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	116899000	USD
CY2014	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2015	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2014Q4	us-gaap	Goodwill Gross GoodwillGross	138669000	USD
CY2015Q4	us-gaap	Goodwill Gross GoodwillGross	138669000	USD
CY2014Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	21770000	USD
CY2015Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	21770000	USD
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-12535000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	49173000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	58498000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-12017000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	50250000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	60231000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	518000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1077000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1733000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-12017000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	50250000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	60231000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21731000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24049000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-151157000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18720000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	20691000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	21679000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1544000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2006000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2621000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1722000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3750000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10407000	USD
CY2013	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-716000	USD
CY2014	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	2263000	USD
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1078000	USD
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-7647000	USD
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3667000	USD
CY2015	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3107000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-8791000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-20125000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-4030000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6174000	USD
CY2014	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	548000	USD
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	240000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	5909000	USD
CY2013	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-1596000	USD
CY2014	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-276000	USD
CY2015	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	1224000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	8625000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2431000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4454000	USD
CY2013	us-gaap	Interest Expense InterestExpense	32885000	USD
CY2014	us-gaap	Interest Expense InterestExpense	24820000	USD
CY2015	us-gaap	Interest Expense InterestExpense	12413000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	5861000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	1553000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3100000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2600000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2700000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	196657000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	192971000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	588279000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	719504000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	34658000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	28366000	USD
CY2013	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-5000	USD
CY2014	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-97000	USD
CY2015	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	775000	USD
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	189712000	USD
CY2014	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-184570000	USD
CY2015	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-10362000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	141081000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-163035000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-87778000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2273000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-97905000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1091000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	51042000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	76467000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	76442000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	-33748000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	7804000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	5043000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	5513000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	7841000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	26201000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	9502000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	6861000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	182033000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	12992000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	211388000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	5078000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2176000	USD
CY2013	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	1400000	USD
CY2014	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	600000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-34481000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-25096000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-11189000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	22464000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	23189000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	20104000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	14468000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	17585000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	75346000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	17892000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	15554000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	17640000	USD
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	20334000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	71420000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	8723000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	6212000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2612000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3648000	USD
CY2015	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100113000	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3603000	USD
CY2014	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	125554000	USD
CY2014	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	240281000	USD
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	157811000	USD
CY2013	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2656000	USD
CY2014	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2015	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6938000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7204000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6132000	USD
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2015Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2015Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2014Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2015Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2014Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2015Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2015Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2014Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	8541000	USD
CY2015Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	11476000	USD
CY2013	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	138000000	USD
CY2014	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2015	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	8391000	USD
CY2014	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	11079000	USD
CY2015	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	13783000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	119600000	USD
CY2014	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	118735000	USD
CY2015	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	112721000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	11020000	USD
CY2014	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	24986000	USD
CY2015	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	48380000	USD
CY2013	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2255000	USD
CY2014	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	5859000	USD
CY2015	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	3933000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	122116000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	124271000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	64023000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	56616000	USD
CY2013	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2014	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	172500000	USD
CY2015	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2013	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	117981000	USD
CY2014	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	110025000	USD
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	111110000	USD
CY2013	us-gaap	Restructuring Charges RestructuringCharges	5546000	USD
CY2014	us-gaap	Restructuring Charges RestructuringCharges	39000	USD
CY2015Q4	us-gaap	Restructuring Charges RestructuringCharges	3600000	USD
CY2015	us-gaap	Restructuring Charges RestructuringCharges	3576000	USD
CY2013	us-gaap	Restructuring Costs RestructuringCosts	653000	USD
CY2014	us-gaap	Restructuring Costs RestructuringCosts	0	USD
CY2015	us-gaap	Restructuring Costs RestructuringCosts	583000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-761526000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-604317000	USD
CY2013	us-gaap	Royalty Revenue RoyaltyRevenue	264111000	USD
CY2014	us-gaap	Royalty Revenue RoyaltyRevenue	271521000	USD
CY2015	us-gaap	Royalty Revenue RoyaltyRevenue	262415000	USD
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	271501000	USD
CY2014Q1	us-gaap	Sales Revenue Net SalesRevenueNet	78288000	USD
CY2014Q2	us-gaap	Sales Revenue Net SalesRevenueNet	76518000	USD
CY2014Q3	us-gaap	Sales Revenue Net SalesRevenueNet	69712000	USD
CY2014Q4	us-gaap	Sales Revenue Net SalesRevenueNet	72040000	USD
CY2014	us-gaap	Sales Revenue Net SalesRevenueNet	296558000	USD
CY2015Q1	us-gaap	Sales Revenue Net SalesRevenueNet	72914000	USD
CY2015Q2	us-gaap	Sales Revenue Net SalesRevenueNet	72812000	USD
CY2015Q3	us-gaap	Sales Revenue Net SalesRevenueNet	73779000	USD
CY2015Q4	us-gaap	Sales Revenue Net SalesRevenueNet	76773000	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	296278000	USD
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	76467000	USD
CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	74770000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	70554000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	14981000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	14730000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	15096000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	35400000	shares
CY2006Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	8400000	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2015Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	1000000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7865000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	10559000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	13077000	USD
CY2014Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	19000000	shares
CY2015Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	20000000.0	shares
CY2014Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	5200000	shares
CY2015Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	12200000	shares
CY2015	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	7812000	shares
CY2015	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	80000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	321594000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	340229000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	391622000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	526533000	USD
CY2015Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	3900000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16773000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18794000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	19903000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20836000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20800000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	91000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	556000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	35000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	218000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1156000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1134000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1186000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	956000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	531000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2100000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2200000	USD
CY2015Q3	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-174456000	USD
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2014	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3306000	shares
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2670000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112415000	shares
CY2014Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	116629000	shares
CY2014Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117398000	shares
CY2014Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	118206000	shares
CY2014Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117620000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117624000	shares
CY2015Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117442000	shares
CY2015Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	120939000	shares
CY2015Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	119542000	shares
CY2015Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113388000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117484000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112415000	shares
CY2014Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	113590000	shares
CY2014Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	114116000	shares
CY2014Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	114523000	shares
CY2014Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	115024000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	114318000	shares
CY2015Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	115336000	shares
CY2015Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	116027000	shares
CY2015Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	116444000	shares
CY2015Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111476000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	114814000	shares
CY2015	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Credit Concentration</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2015</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2014</font><font style="font-family:inherit;font-size:10pt;">, the Company’s cash, cash equivalents and marketable securities were invested with various financial institutions in the form of corporate notes, bonds and commercial paper, money market funds, U.S. Treasuries, U.S. Government Agencies, and municipal bonds and notes. The Company’s exposure to market risk for changes in interest rates relates primarily to its investment portfolio. The Company places its investments with high credit issuers and, by investment policy, attempts to limit the amount of credit exposure to any one issuer. As stated in the Company’s investment policy, it will ensure the safety and preservation of the Company’s invested funds by limiting default risk and market risk. The Company has no investments denominated in foreign country currencies and therefore is not subject to foreign exchange risk from these assets.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company mitigates default risk by investing in high credit quality securities and by positioning its portfolio to respond appropriately to a significant reduction in a credit rating of any investment issuer or guarantor. The portfolio includes only marketable securities with active secondary or resale markets to enable portfolio liquidity.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company's accounts receivable are derived from revenue earned from customers located in the U.S. and internationally. See Note 6, "Segments and Major Customers" for further details.</font></div></div>
CY2015	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Recent Accounting Pronouncements</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2015-17, "Balance Sheet Classification of Deferred Taxes (Topic 740)," to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax liabilities and assets be classified as non-current in a classified statement of financial position. This ASU is effective for financial statements issued for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. Early adoption is permitted. The Company has early adopted this ASU as of December 31, 2015 on a prospective basis. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In April 2015, the FASB issued ASU No. 2015-03, "Simplifying the Presentation of Debt Issuance Costs," which requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This ASU requires retrospective adoption and is effective for financial statements issued for fiscal years beginning after December 15, 2015 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact that this guidance will have on its consolidated financial statements.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In June 2014, the FASB issued ASU No. 2014-12, "Compensation - Stock Compensation (Topic 718)," which makes amendments to the codification topic 718, "Accounting for Share-Based Payments," when the terms of an award provide that a performance target could be achieved after the requisite service period. The new accounting standards update becomes effective for the Company on January 1, 2016. The Company is currently evaluating the impact that this guidance will have on its financial position, results of operations or cash flows.</font></div><div style="line-height:120%;padding-bottom:10px;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In May 2014, the FASB and International Accounting Standards Board issued their converged accounting standards update on revenue recognition. The core principle of the new guidance is for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration (that is, payment) to which the company expects to be entitled in exchange for those goods or services. The new guidance also will result in enhanced disclosures about revenue, provide guidance for transactions that were not previously addressed comprehensively (for example, service revenue and contract modifications) and improve guidance for multiple-element arrangements. In August 2015, the FASB deferred the effective date of this accounting standards update by one year. The new accounting standards update becomes effective for the Company on January 1, 2018. The Company is currently evaluating the impact that this guidance will have on its financial condition and results of operations.</font></div></div>
CY2015	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Formation and Business of the Company</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Rambus Inc. (the “Company” or “Rambus”) was incorporated in California in March 1990 and reincorporated in Delaware in March 1997. In addition to licensing, the Company is creating new business opportunities through offering products and services where its goal is to perpetuate strong company operating performance and long-term stockholder value. The Company generates revenue by licensing its inventions and solutions, selling its semiconductor products and providing services to market-leading companies.     </font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:17px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">While the Company has historically focused its efforts on the development of technologies for electronics memory and chip interfaces, the Company has expanded its portfolio of inventions and solutions to address additional markets in lighting, chip and system security, as well as new areas within the semiconductor industry, such as computational sensing and imaging. The Company intends to continue its growth into new technology fields, consistent with its mission to create great value through the Company's innovations and to make those technologies available through both its licensing and non-licensing business models. Key to the Company's efforts will be hiring and retaining world-class inventors, scientists and engineers to lead the development of inventions and technology solutions for its fields of focus, and the management and business support personnel necessary to execute its plans and strategies.</font></div></div>
CY2015	us-gaap	Revenue Recognition Long Term Contracts RevenueRecognitionLongTermContracts	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Contract and Other Revenue</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Rambus recognizes revenue from the sale of products when risk of loss and title have transferred to customers, provided all other revenue recognition criteria have been met. The Company accrues for sales returns and warranty based on experience, none of which are currently material. </font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Rambus generally recognizes revenue using percentage of completion or proportional performance for development contracts related to licenses of its solutions that involve significant engineering and integration services. For agreements accounted for using the percentage-of-completion method, Rambus determines progress to completion using input measures based upon contract costs incurred. Rambus has evaluated use of output measures versus input measures and has determined that its output is not sufficiently uniform with respect to cost, time and effort per unit of output to use output measures as a measure of progress to completion. </font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;"></font></div></div>
CY2015	us-gaap	Revenue Recognition Services Royalty Fees RevenueRecognitionServicesRoyaltyFees	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Royalty Revenue</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Rambus generally recognizes royalty revenue upon notification by its customers and when deemed collectible. The terms of the royalty agreements generally either require customers to give Rambus notification and to pay the royalties within a specified period or are based on a fixed royalty that is due within a specified period. Many of Rambus’ customers have the right to cancel their licenses. In such arrangements, revenue is only recognized to the extent that is consistent with the cancellation provisions. Cancellation provisions within such contracts generally provide for a prospective cancellation with no refund of fees already remitted by customers for products provided and payment for services rendered prior to the date of cancellation. Rambus has </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">two</font><font style="font-family:inherit;font-size:10pt;"> types of royalty revenue: (1) patent license royalties and (2) technology license royalties.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Patent licenses - Rambus licenses its broad portfolio of patented inventions to companies who use these inventions in the development and manufacture of their own products. Such licensing agreements may cover the license of part, or all, of Rambus' patent portfolio. The contractual terms of the agreements generally provide for payments over an extended period of time. For the licensing agreements with fixed royalty payments, Rambus generally recognizes revenue from these arrangements as amounts become due. For the licensing agreements with variable royalty payments which can be based on either a percentage of sales or number of units sold, Rambus earns royalties at the time that the customers’ sales occur. Rambus’ customers, however, do not report and pay royalties owed for sales in any given quarter until after the conclusion of that quarter. As Rambus is unable to estimate the customers’ sales in any given quarter to determine the royalties due to Rambus, it recognizes royalty revenues based on royalties reported by customers during the quarter and when other revenue recognition criteria are met.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In addition, Rambus may enter into certain settlements of patent infringement disputes. The amount of consideration received upon any settlement (including but not limited to past royalty payments, future royalty payments and punitive damages) is allocated to each element of the settlement based on the fair value of each element. In addition, revenues related to past royalties are recognized upon execution of the agreement by both parties, provided that the amounts are fixed or determinable, there are no significant undelivered obligations and collectability is reasonably assured. Rambus does not recognize any revenues prior to execution of the agreement since there is no reliable basis on which it can estimate the amounts for royalties related to previous periods or assess collectability. Elements that are related to royalty revenue in nature (including but not limited to past royalty payments and future royalty payments) will be recorded as royalty revenue in the consolidated statements of operations. Elements that are not related to royalty revenue in nature (including but not limited to punitive damage and settlement) will be recorded as gain from settlement which is reflected as a separate line item within the operating expenses section in the consolidated statements of operations.</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Technology licenses - Rambus develops proprietary and industry-standard products that it provides to its customers under technology license agreements. These arrangements include royalties, which can be based on either a percentage of sales or number of units sold. Rambus earns royalties on such licensed products sold worldwide by its customers at the time that the customers’ sales occur. Rambus’ customers, however, do not report and pay royalties owed for sales in any given quarter until after the conclusion of that quarter. As Rambus is unable to estimate the customers’ sales in any given quarter to determine the royalties due to Rambus, it recognizes royalty revenues based on royalties reported by customers during the quarter and when other revenue recognition criteria are met. </font></div></div>
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-bottom:10px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>

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2014 Q4 Form 10-K Financial Statement

#000091727316000027 Filed on February 19, 2016

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2014 Q4 Form 10-K Financial Statement

#000091727316000027 Filed on February 19, 2016

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RAMBUS INC Stock $rmbs