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Shareholders' Equity (Stock Options Granted in 2015) (Narrative) (Details) - $ / shares	1 Months Ended	12 Months Ended
	Jul. 28, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of options		$ 26.91
Share Option Plan (2013) [Member] | $26.91 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	89,907
Exercise price of options	$ 26.91
Expiration date	Jul. 28, 2023
Closing price to determine expiration date	$ 13.46

X

- Definition

Condition for Expiration

+ References

No definition available.

+ Details

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Namespace Prefix:	silc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Date the equity-based award expires, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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

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- Definition

Net number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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