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Summary of Significant Accounting Policies (Depreciation of Property, Plant and Equipment) (Details) | 12 Months Ended
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Dec. 31, 2021
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] |  |
Property, Plant and Equipment [Line Items] |  |
Straight-line depreciation rate |  | [1]
[1] | Over the shorter term of the lease or the useful life of the asset

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- Definition Straight-Line Depreciation Rate + References No definition available. + Details
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Namespace Prefix: | silc_
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |