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Summary Of Significant Accounting Policies (Depreciation Of Property, Plant And Equipment) (Details)	12 Months Ended
	Dec. 31, 2012
Machinery And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	15.00%
Machinery And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	33.00%
Office Furniture And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	6.00%
Office Furniture And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	33.00%
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	10.00%
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Straight-line depreciation rate	20.00%

X

- 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

X

- Details

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