XML 91 R63.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Balance Sheet Details (Details) (USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jan. 31, 2013 sqft | Nov. 04, 2011 sqft
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | $ 123,456,000 us-gaap_PropertyPlantAndEquipmentGross |  |  | $ 122,116,000 us-gaap_PropertyPlantAndEquipmentGross | $ 123,456,000 us-gaap_PropertyPlantAndEquipmentGross |  |  |  |
Less accumulated depreciation and amortization | (50,814,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |  | (58,093,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | (50,814,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |  |  |
Property, plant and equipment, net | 72,642,000 us-gaap_PropertyPlantAndEquipmentNet |  |  | 64,023,000 us-gaap_PropertyPlantAndEquipmentNet | 72,642,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |  |
Restructuring costs | 2,200,000 us-gaap_RestructuringCharges | 1,100,000 us-gaap_RestructuringCharges | 2,200,000 us-gaap_RestructuringCharges | 39,000 us-gaap_RestructuringCharges | 5,546,000 us-gaap_RestructuringCharges | 7,301,000 us-gaap_RestructuringCharges |  |  |
Construction in progress, capitalized | 40,320,000 rmbs_PropertyPlantAndEquipmentCostCapitalizationAmount |  |  | 40,300,000 rmbs_PropertyPlantAndEquipmentCostCapitalizationAmount | 40,320,000 rmbs_PropertyPlantAndEquipmentCostCapitalizationAmount |  |  |  |
Depreciation expense |  |  |  | 13,625,000 us-gaap_Depreciation | 15,451,000 us-gaap_Depreciation | 13,190,000 us-gaap_Depreciation |  |  |
Building |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 40,320,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |  |  | 40,320,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember | 40,320,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |  |  |  |
Computer software |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 22,068,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember |  |  | 21,412,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember | 22,068,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember |  |  |  |
Computer equipment |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 29,869,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerEquipmentMember |  |  | 27,744,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerEquipmentMember | 29,869,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerEquipmentMember |  |  |  |
Furniture and fixtures |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 12,360,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember |  |  | 13,464,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember | 12,360,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember |  |  |  |
Leasehold improvements |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 7,024,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |  |  | 7,052,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember | 7,024,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |  |  |  |
Machinery |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 11,533,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember |  |  | 11,699,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember | 11,533,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember |  |  |  |
Construction in progress |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | 282,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |  |  | 425,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember | 282,000 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |  |  |  |
LDT | Building Improvements |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Tangible asset impairment charges | 3,500,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingImprovementsMember / us-gaap_StatementBusinessSegmentsAxis = rmbs_LightingAndDisplayTechnologyLdtMember |  |  |  |  |  | 5,800,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingImprovementsMember / us-gaap_StatementBusinessSegmentsAxis = rmbs_LightingAndDisplayTechnologyLdtMember |  |
LDT | Computer software |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Tangible asset impairment charges | 200,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember / us-gaap_StatementBusinessSegmentsAxis = rmbs_LightingAndDisplayTechnologyLdtMember |  |  |  |  |  | 600,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember / us-gaap_StatementBusinessSegmentsAxis = rmbs_LightingAndDisplayTechnologyLdtMember |  |
LDT | Machinery |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Tangible asset impairment charges | 500,000 us-gaap_TangibleAssetImpairmentCharges / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember / us-gaap_StatementBusinessSegmentsAxis = rmbs_LightingAndDisplayTechnologyLdtMember |  |  |  |  |  |  |  |
Facility Closing [Member] |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Restructuring costs |  |  |  |  | $ 2,000,000 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember |  |  |  |
MTSPELLC Amended [Member] |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |
Total space under lease (in square feet) |  |  |  |  |  |  |  | 31,000 us-gaap_AreaOfRealEstateProperty / rmbs_OperatingLeaseCommitmentAxis = rmbs_MtspellcAmendedMember | 31,000 us-gaap_AreaOfRealEstateProperty / rmbs_OperatingLeaseCommitmentAxis = rmbs_MtspellcAmendedMember

X
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