XML 38 R52.htm IDEA: XBRL DOCUMENT v2.4.1.9

Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Land	$ 8,058us-gaap_Land	$ 6,650us-gaap_Land
Buildings	19,813us-gaap_BuildingsAndImprovementsGross	16,711us-gaap_BuildingsAndImprovementsGross
Machinery and equipment	13,443us-gaap_MachineryAndEquipmentGross	12,038us-gaap_MachineryAndEquipmentGross
Furniture and fixtures	5,131us-gaap_FurnitureAndFixturesGross	4,407us-gaap_FurnitureAndFixturesGross
Leasehold and buildings improvement	4,229simo_BuildingAndLeaseholdImprovementsGross	3,753simo_BuildingAndLeaseholdImprovementsGross
Software	29,796us-gaap_CapitalizedComputerSoftwareGross	25,939us-gaap_CapitalizedComputerSoftwareGross
Total	80,470us-gaap_PropertyPlantAndEquipmentGross	69,498us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation	45,176us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	39,324us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Prepayment and construction in progress	243simo_PrepaymentForConstructionInProgress	21simo_PrepaymentForConstructionInProgress
Property, Plant and Equipment, Net	35,537us-gaap_PropertyPlantAndEquipmentNet	30,195us-gaap_PropertyPlantAndEquipmentNet	23,386us-gaap_PropertyPlantAndEquipmentNet
Software
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	25,807us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ComputerSoftwareIntangibleAssetMember	22,160us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_ComputerSoftwareIntangibleAssetMember
Buildings
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	2,240us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember	1,869us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	10,573us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember	9,083us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	3,492us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember	3,224us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember
Leasehold and buildings improvement
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	$ 3,064us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = simo_BuildingAndLeaseholdImprovementsMember	$ 2,988us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = simo_BuildingAndLeaseholdImprovementsMember

X

- Definition

Carrying amount at the balance sheet date of long-lived, depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure as well as the addition of improvements to assets held under lease arrangements.

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Prepayment for Construction in Progress

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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