$RMBS
RAMBUS INC Stock $rmbs

$rmbs Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000091727314000007 Filed on February 21, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$57.44M	$57.53M	$56.22M
YoY Change	-31.09%	-42.62%	-15.1%
Cost Of Revenue	$6.300M	$7.529M	$7.340M
YoY Change	-16.0%	1.4%	21.16%
Gross Profit	$51.10M	$50.00M	$48.88M
YoY Change	-32.67%	-46.14%	-18.75%
Gross Profit Margin	88.96%	86.91%	86.94%
Selling, General & Admin	$21.40M	$24.26M	$32.19M
YoY Change	-63.23%	-50.45%	-14.68%
% of Gross Profit	41.88%	48.51%	65.87%
Research & Development	$33.10M	$30.67M	$38.35M
YoY Change	-7.54%	-5.09%	58.33%
% of Gross Profit	64.77%	61.35%	78.46%
Depreciation & Amortization	$10.40M	$11.10M	$11.30M
YoY Change	-1.89%	11.0%	68.66%
% of Gross Profit	20.35%	22.2%	23.12%
Operating Expenses	$54.50M	$54.93M	$70.54M
YoY Change	-42.02%	-32.41%	13.86%
Operating Profit	-$4.027M	-$47.10M	-$21.75M
YoY Change	-77.79%	-538.71%	767.19%
Interest Expense	-$7.200M	$7.121M	$6.719M
YoY Change	14.29%	12.14%	-211.98%
% of Operating Profit
Other Income/Expense, Net		-$7.133M	-$6.630M
YoY Change
Pretax Income	-$11.20M	-$54.23M	-$28.38M
YoY Change	-54.1%	-1289.84%	233.87%
Income Tax	$4.900M	$3.865M	$3.837M
% Of Pretax Income
Net Earnings	-$16.10M	-$58.10M	-$32.20M
YoY Change	-43.9%	-11720.0%	203.77%
Net Earnings / Revenue	-28.03%	-100.99%	-57.28%
Basic Earnings Per Share
Diluted Earnings Per Share	-$144.7K	-$524.4K	-$291.1K
COMMON SHARES
Basic Shares Outstanding	111.3M shares	110.8M shares	110.6M shares
Diluted Shares Outstanding	111.3M shares	110.8M shares	110.6M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$203.3M	$207.1M	$203.2M
YoY Change	-29.78%	-29.27%	-43.46%
Cash & Equivalents	$149.0M	$152.2M	$152.6M
Short-Term Investments	$54.30M	$54.90M	$50.70M
Other Short-Term Assets	$11.30M	$11.60M	$10.10M
YoY Change	3.67%	-3.33%	-21.09%
Inventory
Prepaid Expenses
Receivables	$529.0K	$452.0K	$100.0K
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$215.2M	$219.1M	$213.5M
YoY Change	-28.6%	-28.3%	-42.85%
LONG-TERM ASSETS
Property, Plant & Equipment	$86.91M	$84.26M	$87.10M
YoY Change	7.15%	16.21%	22.33%
Goodwill	$125.0M	$125.0M
YoY Change	8.53%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$3.131M	$5.514M	$15.30M
YoY Change	-52.12%	-56.92%	68.13%
Total Long-Term Assets	$372.6M	$382.7M	$427.2M
YoY Change	-5.01%	-1.84%	9.65%
TOTAL ASSETS
Total Short-Term Assets	$215.2M	$219.1M	$213.5M
Total Long-Term Assets	$372.6M	$382.7M	$427.2M
Total Assets	$587.8M	$601.8M	$640.7M
YoY Change	-15.26%	-13.47%	-16.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.918M	$7.841M	$8.600M
YoY Change	-52.21%	-56.68%	-27.73%
Accrued Expenses	$33.80M	$39.80M	$33.00M
YoY Change	-20.09%	6.7%	44.74%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$54.13M	$61.11M	$51.30M
YoY Change	-17.11%	-7.83%	0.2%
LONG-TERM LIABILITIES
Long-Term Debt	$193.5M	$189.8M	$186.0M
YoY Change	9.14%	13.86%	14.89%
Other Long-Term Liabilities	$12.08M	$10.75M	$19.80M
YoY Change	6.71%	-19.75%	100.0%
Total Long-Term Liabilities	$12.08M	$10.75M	$205.8M
YoY Change	6.71%	-94.03%	19.79%
TOTAL LIABILITIES
Total Short-Term Liabilities	$54.13M	$61.11M	$51.30M
Total Long-Term Liabilities	$12.08M	$10.75M	$205.8M
Total Liabilities	$266.2M	$271.0M	$257.1M
YoY Change	0.89%	9.94%	15.29%
SHAREHOLDERS EQUITY
Retained Earnings	-$754.0M	-$737.8M
YoY Change	21.68%
Common Stock	$1.076B	$1.069B
YoY Change	2.48%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$321.6M	$330.8M	$383.5M
YoY Change
Total Liabilities & Shareholders Equity	$587.8M	$601.8M	$640.7M
YoY Change	-15.26%	-13.47%	-16.05%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	-$16.10M	-$58.10M	-$32.20M
YoY Change	-43.9%	-11720.0%	203.77%
Depreciation, Depletion And Amortization	$10.40M	$11.10M	$11.30M
YoY Change	-1.89%	11.0%	68.66%
Cash From Operating Activities	$2.300M	$10.80M	-$19.60M
YoY Change	15.0%	-69.66%	-198.49%
INVESTING ACTIVITIES
Capital Expenditures	-$6.000M	-$7.500M	-$6.700M
YoY Change	11.11%	78.57%	48.89%
Acquisitions
YoY Change
Other Investing Activities	$500.0K	-$4.300M	-$10.60M
YoY Change	-86.49%	-109.29%	-52.25%
Cash From Investing Activities	-$5.500M	-$11.80M	-$17.30M
YoY Change	223.53%	-127.96%	-35.45%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	100.0K	600.0K	900.0K
YoY Change	-90.91%	-100.62%	-79.07%
NET CHANGE
Cash From Operating Activities	2.300M	10.80M	-19.60M
Cash From Investing Activities	-5.500M	-11.80M	-17.30M
Cash From Financing Activities	100.0K	600.0K	900.0K
Net Change In Cash	-3.100M	-400.0K	-36.00M
YoY Change	-321.43%	-97.87%	1284.62%
FREE CASH FLOW
Cash From Operating Activities	$2.300M	$10.80M	-$19.60M
Capital Expenditures	-$6.000M	-$7.500M	-$6.700M
Free Cash Flow	$8.300M	$18.30M	-$12.90M
YoY Change	12.16%	-54.02%	-152.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	7001000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	7918000	USD
CY2013Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	2300000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	529000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2251000	USD
CY2013Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	6561000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	6533000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	66443000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	50814000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-386000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-391000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	86000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	86000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-300000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-305000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1075761000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1128148000	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
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	28354000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	22546000	USD
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	19296000	USD
CY2012	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	14695000	USD
CY2011	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	12622000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	30345000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	20191000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28909000	USD
CY2012Q4	us-gaap	Assets Assets	587812000	USD
CY2013Q4	us-gaap	Assets Assets	713379000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	215176000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	398371000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	359112000	USD
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	183926000	USD
CY2013Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	48966000	USD
CY2012Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	54346000	USD
CY2013Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	359097000	USD
CY2012Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	183915000	USD
CY2013Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	15000	USD
CY2012Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	15000	USD
CY2013Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	0	USD
CY2012Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	4000	USD
CY2013Q4	us-gaap	Cash Cash	28565000	USD
CY2012Q4	us-gaap	Cash Cash	19415000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	338696000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148984000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	162244000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	215262000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	113459390	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	111525021	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	111525021	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	113459390	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	112000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	113000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-134247000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-33753000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-43080000	USD
CY2013	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, 2013</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2012</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. government bonds and notes, 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. As of December 31, 2013, one customer accounted for approximately </font><font style="font-family:inherit;font-size:10pt;">73%</font><font style="font-family:inherit;font-size:10pt;"> of the total </font><font style="font-family:inherit;font-size:10pt;">$2.3 million</font><font style="font-family:inherit;font-size:10pt;"> of accounts receivable. The Company's accounts receivable balance as of December 31, 2012 was not material.</font></div></div>
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	6700000	USD
CY2013	us-gaap	Contracts Revenue ContractsRevenue	7390000	USD
CY2012	us-gaap	Contracts Revenue ContractsRevenue	1666000	USD
CY2011	us-gaap	Contracts Revenue ContractsRevenue	13359000	USD
CY2013Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	109629000	USD
CY2012Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	147556000	USD
CY2012Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	147556000	USD
CY2013Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	273676000	USD
CY2013Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	164047000	USD
CY2012Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	0	USD
CY2013	us-gaap	Cost Of Revenue CostOfRevenue	33215000	USD
CY2012	us-gaap	Cost Of Revenue CostOfRevenue	28372000	USD
CY2011	us-gaap	Cost Of Revenue CostOfRevenue	24085000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	324485000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	249037000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	313899000	USD
CY2013Q2	us-gaap	Costs And Expenses CostsAndExpenses	52175000	USD
CY2013Q1	us-gaap	Costs And Expenses CostsAndExpenses	65425000	USD
CY2012Q4	us-gaap	Costs And Expenses CostsAndExpenses	61470000	USD
CY2012Q2	us-gaap	Costs And Expenses CostsAndExpenses	77964000	USD
CY2012Q1	us-gaap	Costs And Expenses CostsAndExpenses	80421000	USD
CY2013Q4	us-gaap	Costs And Expenses CostsAndExpenses	67208000	USD
CY2013Q3	us-gaap	Costs And Expenses CostsAndExpenses	64229000	USD
CY2012Q3	us-gaap	Costs And Expenses CostsAndExpenses	104630000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15048000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16595000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19319000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	543000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	886000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	446000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	47000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-2868000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	17000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	24944000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	36824000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2200000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-255000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	587000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	9000	USD
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	220000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	207000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3728000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1919000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-246000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2934000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-501000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	197359000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	207976000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2489000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4523000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	205000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	788000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	4797000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	4458000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	38133000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	27416000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	100052000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	76826000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	33837000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	42546000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	18578000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	19624000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	192823000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	184817000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	791000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1722000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	723000	USD
CY2012	us-gaap	Depreciation Depreciation	13190000	USD
CY2013	us-gaap	Depreciation Depreciation	15451000	USD
CY2011	us-gaap	Depreciation Depreciation	11894000	USD
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.350
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.350
CY2013	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 Pronouncement</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 July 2013, the FASB issued Accounting Standards Update (“ASU”) No. 2013-11 “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.” ASU No. 2013-11 is a new accounting standards update related to the financial statement presentation of unrecognized tax benefits. The new accounting standards update provides that a liability related to an unrecognized tax benefit would be presented as a reduction of a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. The new accounting standards update becomes effective for the Company on January 1, 2014 and it should be applied prospectively to unrecognized tax benefits that exist at the effective date with retrospective application permitted. The Company anticipates the adoption may result in equal reductions to both deferred tax assets and long term taxes payable of approximately </font><font style="font-family:Times New Roman;font-size:10pt;color:#000000;">$4.7 million</font><font style="font-family:inherit;font-size:10pt;">.</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 February 2013, the FASB issued ASU No. 2013-02 “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.” ASU No. 2013-02 requires an entity to disaggregate the total change of each component of other comprehensive income either on the face of the income statement or as a separate disclosure in the notes. The new accounting standards update became effective for the Company's interim period ended March 31, 2013. The Company adopted this new accounting standards update and the adoption did not have any impact on its financial position, results of operations or cash flows as the amounts reclassified out of accumulated other comprehensive loss were de minimis.</font></div></div>
CY2011	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.39
CY2013	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.30
CY2012	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-1.21
CY2013Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.07
CY2012Q4	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.14
CY2013Q1	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.09
CY2012Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.29
CY2013Q3	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.05
CY2012Q1	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.25
CY2013Q4	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.09
CY2012Q3	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-0.52
CY2013	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.30
CY2012	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-1.21
CY2011	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.39
CY2013Q3	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.05
CY2013Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.07
CY2012Q3	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.52
CY2012Q4	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.14
CY2012Q1	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.25
CY2013Q1	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.09
CY2013Q4	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.09
CY2012Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-0.29
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-138000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-42000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-5000	USD
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.140
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.808
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.669
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.025
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.350
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	1.923
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	2.523
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.324
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.330
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.174
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.041
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.007
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.028
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.010
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.022
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.001
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.033
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-0.133
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-1.633
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-1.977
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.367
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.010
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	33448000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	23992000	USD
CY2013	us-gaap	Fair Value Inputs Long Term Revenue Growth Rate FairValueInputsLongTermRevenueGrowthRate	0.03
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	71592000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	100423000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	5420000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	27487000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	10827000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	23734000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	24356000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	25348000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	224765000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	217595000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	117172000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	153173000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	1388000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	0	USD
CY2012	us-gaap	Gain Loss On Disposition Of Intangible Assets GainLossOnDispositionOfIntangibleAssets	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-364000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-8000	USD
CY2012	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2011	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	6200000	USD
CY2013	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	535000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	124969000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	116899000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	115148000	USD
CY2013	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	23521000	USD
CY2013Q4	us-gaap	Goodwill Gross GoodwillGross	138669000	USD
CY2012Q4	us-gaap	Goodwill Gross GoodwillGross	138669000	USD
CY2013Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	21770000	USD
CY2012Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	13700000	USD
CY2013	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	8070000	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	13700000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-3586000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-12535000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-61036000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	518000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-22215000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-56849000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-117885000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-12017000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-25801000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21731000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16451000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17252000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18720000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16254000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16384000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10452000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1544000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-9664000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2714000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1722000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-497000	USD
CY2011	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1047000	USD
CY2013	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-716000	USD
CY2012	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-3522000	USD
CY2011	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-741000	USD
CY2012	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1847000	USD
CY2013	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-7114000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8810000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6174000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8379000	USD
CY2013	us-gaap	Interest Expense InterestExpense	32885000	USD
CY2011	us-gaap	Interest Expense InterestExpense	24828000	USD
CY2012	us-gaap	Interest Expense InterestExpense	27510000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	8625000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	8625000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	8625000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3100000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4100000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2700000	USD
CY2012	us-gaap	Legal Fees LegalFees	244000	USD
CY2011	us-gaap	Legal Fees LegalFees	16187000	USD
CY2013	us-gaap	Legal Fees LegalFees	19000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	373150000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	266218000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	713379000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	587812000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	212842000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	54134000	USD
CY2011	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	10900000	USD
CY2013	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-5000	USD
CY2011	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-27000	USD
CY2012	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	89000	USD
CY2013	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”), the innovative technology solutions company that brings invention to market, 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, whether in the form of patent licensing, solutions licensing, services or products, to market-leading companies.     </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;">While the Company has historically focused its efforts on the development of technologies for electronics memory and chip interfaces, the Company has been expanding its portfolio of inventions and solutions to address additional markets in chip and system security as well as LED-based lighting. The Company also is exploring new areas within the semiconductor space such as computational sensing and imaging. The Company intends to continue to identify disruptions and opportunities in both traditional and new technology fields, consistent with its goal of creating great value through its innovations and to make those technologies available through both its licensing and non-licensing business models. Key to the Company's efforts, both in its current businesses and in any new area of diversification, will be hiring and retaining world-class inventors, scientists and engineers to lead the development of inventions and technology solutions for these fields of focus, and the management and business support personnel necessary to execute its plans and strategies.</font></div></div>
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-53018000	USD
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	189712000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-13260000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	1658000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-81905000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	140781000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-24105000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2273000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	2583000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	53034000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	51342000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-17496000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-33748000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-9777000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-134336000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-43053000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-32216000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-27890000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-58098000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-7844000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-10402000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-16132000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-5725000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	5909000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	3093000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	1709000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-24265000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-34481000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-27451000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	22464000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	-1536000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	-90434000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-17558000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	5744000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1441000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-21749000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-4027000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-47100000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	6214000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	9065000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	12402000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7848000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3131000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3498000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12076000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	4769000	USD
CY2012	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	59000	USD
CY2011	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	563000	USD
CY2013	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	-1596000	USD
CY2013	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	1400000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2012	us-gaap	Payments For Proceeds From Tenant Allowance PaymentsForProceedsFromTenantAllowance	0	USD
CY2013	us-gaap	Payments For Proceeds From Tenant Allowance PaymentsForProceedsFromTenantAllowance	0	USD
CY2011	us-gaap	Payments For Proceeds From Tenant Allowance PaymentsForProceedsFromTenantAllowance	-8800000	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3603000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2012	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	110716000	USD
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	125554000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	173996000	USD
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	167381000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	46278000	USD
CY2012	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1700000	USD
CY2011	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1210000	USD
CY2013	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2656000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6938000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19431000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	21809000	USD
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	8253000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	10529000	USD
CY2013	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	138000000	USD
CY2011	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2012	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	4103000	USD
CY2013	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	8391000	USD
CY2011	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	12282000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	119600000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	183086000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	337880000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	11020000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	33000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2255000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	153348000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	123456000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	86905000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	72642000	USD
CY2011	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	115696000	USD
CY2013	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	117981000	USD
CY2012	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	140503000	USD
CY2013	us-gaap	Restructuring Charges RestructuringCharges	5546000	USD
CY2012	us-gaap	Restructuring Charges RestructuringCharges	7301000	USD
CY2011	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2013Q3	us-gaap	Restructuring Charges RestructuringCharges	1100000	USD
CY2012Q3	us-gaap	Restructuring Charges RestructuringCharges	6600000	USD
CY2013Q4	us-gaap	Restructuring Charges RestructuringCharges	2200000	USD
CY2013Q1	us-gaap	Restructuring Charges RestructuringCharges	2200000	USD
CY2012Q4	us-gaap	Restructuring Charges RestructuringCharges	700000	USD
CY2011	us-gaap	Restructuring Costs RestructuringCosts	0	USD
CY2013	us-gaap	Restructuring Costs RestructuringCosts	653000	USD
CY2012	us-gaap	Restructuring Costs RestructuringCosts	0	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-753979000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-787727000	USD
CY2013	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 LED edge-lit products when risk of loss and title have transferred to customers, provided all other revenue recognition criteria have been met. Revenue from distributors is recognized on the shipment or delivery of the related products, provided all other revenue recognition criteria have been met. The Company's agreements with these distributors have terms which are generally consistent with the standard terms and conditions for the sale of the Company's products to end users, and do not provide for product rotation or pricing allowances. The Company accrues for sales returns and warranty based on the standard market 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 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. </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>
CY2013	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 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) solutions 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;">Solutions licenses - Rambus develops proprietary and industry-standard products that it provides to its customers under solutions 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>
CY2011	us-gaap	Royalty Revenue RoyaltyRevenue	299004000	USD
CY2013	us-gaap	Royalty Revenue RoyaltyRevenue	264111000	USD
CY2012	us-gaap	Royalty Revenue RoyaltyRevenue	232385000	USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	234051000	USD
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	312363000	USD
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	271501000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	56215000	USD
CY2013Q3	us-gaap	Sales Revenue Net SalesRevenueNet	73294000	USD
CY2013Q4	us-gaap	Sales Revenue Net SalesRevenueNet	73422000	USD
CY2013Q1	us-gaap	Sales Revenue Net SalesRevenueNet	66866000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	57443000	USD
CY2013Q2	us-gaap	Sales Revenue Net SalesRevenueNet	57919000	USD
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	57530000	USD
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	62863000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	112594000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	164131000	USD
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	76448000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	14981000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	22546000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	27996000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	21400000	shares
CY2006Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	8400000	shares
CY2013Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	2000000	USD
CY2011	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	86143000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3501000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	10094000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7865000	USD
CY2013Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	19000000	shares
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1521000	USD
CY2013Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	5200000	shares
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	340229000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	321594000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	429794000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	334783000	USD
CY2013Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	7400000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18794000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16773000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16610000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11816000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1947000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	91000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	725000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	589000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	608000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1156000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	956000	USD
CY2012Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110553000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	111599000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112183000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110826000	shares
CY2012Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	111332000	shares
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4911000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1600000	USD
CY2013	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>
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110769000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112415000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110041000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110358000	shares
CY2013Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112640000	shares
CY2013Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113217000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110041000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110769000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112415000	shares
CY2013Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	113217000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110826000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111599000	shares
CY2012Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110553000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112183000	shares
CY2012Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111332000	shares
CY2013Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112640000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110358000	shares
CY2012	rmbs	Accrued Litigation Expense AccruedLitigationExpense	-680000	USD
CY2011	rmbs	Accrued Litigation Expense AccruedLitigationExpense	6442000	USD
CY2013	rmbs	Accrued Litigation Expense AccruedLitigationExpense	-9324000	USD
CY2012Q4	rmbs	Accrued Litigation Expenses AccruedLitigationExpenses	9822000	USD
CY2013Q4	rmbs	Accrued Litigation Expenses AccruedLitigationExpenses	498000	USD
CY2011	rmbs	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Common Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemableCommonStock	-13500000	USD
CY2013Q4	rmbs	Cash Cash Equivalents And Short Term Investments Amortized Cost Disclosure CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure	387677000	USD
CY2012Q4	rmbs	Cash Cash Equivalents And Short Term Investments Amortized Cost Disclosure CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure	203341000	USD
CY2013Q4	rmbs	Cash Cash Equivalents And Short Term Investments Fair Value Disclosure CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure	387662000	USD
CY2012Q4	rmbs	Cash Cash Equivalents And Short Term Investments Fair Value Disclosure CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure	203330000	USD
CY2013Q4	rmbs	Cash Fair Value Disclosure CashFairValueDisclosure	28565000	USD
CY2012Q4	rmbs	Cash Fair Value Disclosure CashFairValueDisclosure	19415000	USD
CY2013Q4	rmbs	Contractual Amount Total ContractualAmountTotal	398090000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due After Fifth Full Fiscal Year ContractualObligationPaymentsDueAfterFifthFullFiscalYear	9471000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due Fifth Full Fiscal Year ContractualObligationPaymentsDueFifthFullFiscalYear	146339000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due First Full Fiscal Year ContractualObligationPaymentsDueFirstFullFiscalYear	211482000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due Fourth Full Fiscal Year ContractualObligationPaymentsDueFourthFullFiscalYear	8873000	USD
CY2013	rmbs	Defined Contribution Plan Employer Match Employee Contribution Level One DefinedContributionPlanEmployerMatchEmployeeContributionLevelOne	0.06
CY2012	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	2100000	USD
CY2011	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	1600000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due Second Full Fiscal Year ContractualObligationPaymentsDueSecondFullFiscalYear	12606000	USD
CY2013Q4	rmbs	Contractual Obligation Payments Due Third Full Fiscal Year ContractualObligationPaymentsDueThirdFullFiscalYear	9319000	USD
CY2013	rmbs	Cost Method Investment Maximum Ownership Percentage CostMethodInvestmentMaximumOwnershipPercentage	0.20
CY2013Q4	rmbs	Cumulative Payments On Behalf Of Current And Former Officers CumulativePaymentsOnBehalfOfCurrentAndFormerOfficers	32200000	USD
CY2012Q4	rmbs	Cumulative Payments On Behalf Of Current And Former Officers CumulativePaymentsOnBehalfOfCurrentAndFormerOfficers	32200000	USD
CY2013Q4	rmbs	Cumulative Proceeds From Insurance Settlement Indemnification Activities CumulativeProceedsFromInsuranceSettlementIndemnificationActivities	12300000	USD
CY2012Q4	rmbs	Current And Long Term Imputed Financing Obligation CurrentAndLongTermImputedFinancingObligation	45900000	USD
CY2013Q4	rmbs	Current And Long Term Imputed Financing Obligation CurrentAndLongTermImputedFinancingObligation	39700000	USD
CY2011	rmbs	Customer Licensing Income CustomerLicensingIncome	317813000	USD
CY2013	rmbs	Customer Licensing Income CustomerLicensingIncome	281590000	USD
CY2012	rmbs	Customer Licensing Income CustomerLicensingIncome	246716000	USD
CY2012Q4	rmbs	Deferred Tax Assets Depreciation And Amortization DeferredTaxAssetsDepreciationAndAmortization	20230000	USD
CY2013Q4	rmbs	Deferred Tax Assets Depreciation And Amortization DeferredTaxAssetsDepreciationAndAmortization	28093000	USD
CY2013Q4	rmbs	Deferred Tax Assets Net Before Deducting Valuation Allowance DeferredTaxAssetsNetBeforeDeductingValuationAllowance	195312000	USD
CY2012Q4	rmbs	Deferred Tax Assets Net Before Deducting Valuation Allowance DeferredTaxAssetsNetBeforeDeductingValuationAllowance	189340000	USD
CY2012Q4	rmbs	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	8019000	USD
CY2013Q4	rmbs	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	12664000	USD
CY2013	rmbs	Defined Contribution Plan Employee Contribution Limit Percentage Of Compensation DefinedContributionPlanEmployeeContributionLimitPercentageOfCompensation	0.60
CY2013	rmbs	Defined Contribution Plan Employer Contribution DefinedContributionPlanEmployerContribution	1800000	USD
CY2013	rmbs	Defined Contribution Plan Employer Match Level One DefinedContributionPlanEmployerMatchLevelOne	0.50
CY2012	rmbs	Dilutive Potential Securities Excluded From Computation Of Earnings Per Share Amount Due To Loss DilutivePotentialSecuritiesExcludedFromComputationOfEarningsPerShareAmountDueToLoss	6800000	shares
CY2013	rmbs	Dilutive Potential Securities Excluded From Computation Of Earnings Per Share Amount Due To Loss DilutivePotentialSecuritiesExcludedFromComputationOfEarningsPerShareAmountDueToLoss	3300000	shares
CY2011	rmbs	Dilutive Potential Securities Excluded From Computation Of Earnings Per Share Amount Due To Loss DilutivePotentialSecuritiesExcludedFromComputationOfEarningsPerShareAmountDueToLoss	4100000	shares
CY2012	rmbs	Effective Income Tax Rate Reconciliation Capitalized Merger And Acquisition Costs EffectiveIncomeTaxRateReconciliationCapitalizedMergerAndAcquisitionCosts	0.003
CY2013	rmbs	Effective Income Tax Rate Reconciliation Capitalized Merger And Acquisition Costs EffectiveIncomeTaxRateReconciliationCapitalizedMergerAndAcquisitionCosts	0.000
CY2011	rmbs	Effective Income Tax Rate Reconciliation Capitalized Merger And Acquisition Costs EffectiveIncomeTaxRateReconciliationCapitalizedMergerAndAcquisitionCosts	0.059
CY2012	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.003
CY2013	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.008
CY2011	rmbs	Effective Income Tax Rate Reconciliation Executive Compensation EffectiveIncomeTaxRateReconciliationExecutiveCompensation	0.020
CY2012	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	0.133
CY2013	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	1.604
CY2011	rmbs	Effective Income Tax Rate Reconciliation Withholding Tax EffectiveIncomeTaxRateReconciliationWithholdingTax	0.642
CY2012	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	4100000	USD
CY2011	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	3300000	USD
CY2013	rmbs	Financing Expense From Lease Facilities FinancingExpenseFromLeaseFacilities	4400000	USD
CY2013Q4	rmbs	Gross Unrealized Gain On Securities And Cash GrossUnrealizedGainOnSecuritiesAndCash	0	USD
CY2012Q4	rmbs	Gross Unrealized Gain On Securities And Cash GrossUnrealizedGainOnSecuritiesAndCash	4000	USD
CY2013Q4	rmbs	Gross Unrealized Loss On Securities And Cash GrossUnrealizedLossOnSecuritiesAndCash	15000	USD
CY2012Q4	rmbs	Gross Unrealized Loss On Securities And Cash GrossUnrealizedLossOnSecuritiesAndCash	15000	USD
CY2013Q4	rmbs	Impairment Charge For Tangible And Intangible Assets ImpairmentChargeForTangibleAndIntangibleAssets	9700000	USD
CY2013	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	17751000	USD
CY2013	rmbs	Noncash Obligation For Property Plant And Equipment NoncashObligationForPropertyPlantAndEquipment	0	USD
CY2013	rmbs	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Value Of Shares Issued NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationValueOfSharesIssued	0	USD
CY2011	rmbs	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Value Of Shares Issued NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationValueOfSharesIssued	86143000	USD
CY2012	rmbs	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Value Of Shares Issued NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationValueOfSharesIssued	0	USD
CY2011	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	0	USD
CY2012	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	35471000	USD
CY2013Q4	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	9700000	USD
CY2013Q3	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	8100000	USD
CY2012Q3	rmbs	Impairment Of Goodwill And Long Lived Assets ImpairmentOfGoodwillAndLongLivedAssets	35500000	USD
CY2012	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	35471000	USD
CY2013	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	17751000	USD
CY2011	rmbs	Impairment Of Goodwill Intangible Assets And Property Plant And Equipment ImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipment	0	USD
CY2013Q4	rmbs	Long Term Imputed Financing Obligation LongTermImputedFinancingObligation	39349000	USD
CY2012Q4	rmbs	Long Term Imputed Financing Obligation LongTermImputedFinancingObligation	45919000	USD
CY2013	rmbs	Maximum Original Maturity Period To Be Classified As Cash And Cash Equivalents MaximumOriginalMaturityPeriodToBeClassifiedAsCashAndCashEquivalents	P3M
CY2013	rmbs	Non Cash Acquistion Of Patents NonCashAcquistionOfPatents	0	USD
CY2012	rmbs	Non Cash Acquistion Of Patents NonCashAcquistionOfPatents	0	USD
CY2011	rmbs	Non Cash Acquistion Of Patents NonCashAcquistionOfPatents	3000000	USD
CY2012	rmbs	Noncash Obligation For Property Plant And Equipment NoncashObligationForPropertyPlantAndEquipment	2512000	USD
CY2011	rmbs	Noncash Obligation For Property Plant And Equipment NoncashObligationForPropertyPlantAndEquipment	7409000	USD
CY2011	rmbs	Operating Expenses Segment OperatingExpensesSegment	84072000	USD
CY2013	rmbs	Operating Expenses Segment OperatingExpensesSegment	106118000	USD
CY2012	rmbs	Operating Expenses Segment OperatingExpensesSegment	98400000	USD
CY2011	rmbs	Other Non Revenue Patent Royalties Received OtherNonRevenuePatentRoyaltiesReceived	-750000	USD
CY2013	rmbs	Other Non Revenue Patent Royalties Received OtherNonRevenuePatentRoyaltiesReceived	9554000	USD
CY2012	rmbs	Other Non Revenue Patent Royalties Received OtherNonRevenuePatentRoyaltiesReceived	12665000	USD
CY2011	rmbs	Payment Redeem To Contingently Redeemable Common Stock And Common Stock Pursuant To Settlement Agreement PaymentRedeemToContingentlyRedeemableCommonStockAndCommonStockPursuantToSettlementAgreement	100000000	USD
CY2013	rmbs	Payment Redeem To Contingently Redeemable Common Stock And Common Stock Pursuant To Settlement Agreement PaymentRedeemToContingentlyRedeemableCommonStockAndCommonStockPursuantToSettlementAgreement	0	USD
CY2012	rmbs	Payment Redeem To Contingently Redeemable Common Stock And Common Stock Pursuant To Settlement Agreement PaymentRedeemToContingentlyRedeemableCommonStockAndCommonStockPursuantToSettlementAgreement	0	USD
CY2011	rmbs	Payments Under Installment PaymentsUnderInstallment	2531000	USD
CY2012	rmbs	Payments Under Installment PaymentsUnderInstallment	1923000	USD
CY2013	rmbs	Payments Under Installment PaymentsUnderInstallment	1829000	USD
CY2013	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	178000	USD
CY2011	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	456000	USD
CY2012	rmbs	Principal Payments Against Lease Financing Obligation PrincipalPaymentsAgainstLeaseFinancingObligation	522000	USD
CY2013Q4	rmbs	Property Plant And Equipment Cost Capitalization Amount PropertyPlantAndEquipmentCostCapitalizationAmount	40300000	USD
CY2012Q4	rmbs	Property Plant And Equipment Cost Capitalization Amount PropertyPlantAndEquipmentCostCapitalizationAmount	48800000	USD
CY2013	rmbs	Revenue Recognition Number Of Types Of Royalty Revenue RevenueRecognitionNumberOfTypesOfRoyaltyRevenue	2
CY2013Q4	rmbs	Terms Of Noncancellable License Agreement Minimum TermsOfNoncancellableLicenseAgreementMinimum	P1Y
CY2013Q4	rmbs	Unrecognized Tax Benefits Accrued Income Taxes Noncurrent UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent	6200000	USD
CY2012Q4	rmbs	Unrecognized Tax Benefits Accrued Income Taxes Noncurrent UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent	6200000	USD
CY2013Q4	rmbs	Unrecognized Tax Benefits Deferred Tax Assets Noncurrent Gross UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross	12600000	USD
CY2012Q4	rmbs	Unrecognized Tax Benefits Deferred Tax Assets Noncurrent Gross UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross	10600000	USD
CY2011	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	233741000	USD
CY2013	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	175472000	USD
CY2012	rmbs	Segment Operating Income Loss SegmentOperatingIncomeLoss	148316000	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
CY2013	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Specific Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate	0.15
CY2013	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Expiration Period ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod	P10Y
CY2013	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Options To Derive Shares Available For Grant Denominator ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToDeriveSharesAvailableForGrantDenominator	1	denominator
CY2013	rmbs	Share Based Compensation Arrangement By Share Based Payment Award Options To Derive Shares Available For Grant Numerator ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToDeriveSharesAvailableForGrantNumerator	1.5	numerator
CY2010	rmbs	Share Repurchase Agreement Prepayment ShareRepurchaseAgreementPrepayment	90000000	USD
CY2010Q3	rmbs	Share Repurchase Agreement Value Of Stock To Be Repurchased ShareRepurchaseAgreementValueOfStockToBeRepurchased	90000000	USD
CY2011Q4	rmbs	Stock Repurchase Agreement Average Price Of Shares Delivered StockRepurchaseAgreementAveragePriceOfSharesDelivered	18.88
CY2010Q1	rmbs	Stock Repurchase Program Additional Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramAdditionalNumberOfSharesAuthorizedToBeRepurchased	12500000	shares
CY2013Q4	rmbs	Stock Repurchase Program Commencement To Date Repurchased Number Of Shares StockRepurchaseProgramCommencementToDateRepurchasedNumberOfShares	26300000	shares
CY2013Q4	rmbs	Stock Repurchase Program Commencement To Date Repurchased Value StockRepurchaseProgramCommencementToDateRepurchasedValue	428900000	USD
CY2010Q4	rmbs	Stock Repurchase Program Number Of Shares Delivered StockRepurchaseProgramNumberOfSharesDelivered	4800000	shares
CY2013Q2	dei	Entity Public Float EntityPublicFloat	838100000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	RAMBUS INC
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000917273
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	113483805	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer

Files In Submission

Name	View Source	Status
0000917273-14-000007-index-headers.html	Edgar Link	pending
0000917273-14-000007-index.html	Edgar Link	pending
0000917273-14-000007.txt	Edgar Link	pending
0000917273-14-000007-xbrl.zip	Edgar Link	pending
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report.css	Edgar Link	pending
rmbs-20131231.xml	Edgar Link	completed
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$RMBS
RAMBUS INC Stock $rmbs

2012 Q4 Form 10-K Financial Statement

#000091727314000007 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RMBS RAMBUS INC Stock $rmbs

2012 Q4 Form 10-K Financial Statement

#000091727314000007 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RMBS
RAMBUS INC Stock $rmbs