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Summary of Significant Accounting Policies (Depreciation of Property, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2014
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	15.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	33.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Office Furniture and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	6.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_OfficeEquipmentMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Office Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	33.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_OfficeEquipmentMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	10.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	20.00%silc_StraightLineDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition

Straight-Line Depreciation Rate

+ References

No definition available.

+ Details

Name:	silc_StraightLineDepreciationRate
Namespace Prefix:	silc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: