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Commitments and Contingencies (Details)	6 Months Ended	1 Months Ended
	Jun. 30, 2014 lawsuit	Feb. 29, 2012 Nishimura case lawsuit
Litigation
Number of lawsuits filed against the entity	4	5
Number of cases that alleges damages	0
Number of lawsuits dismissed		3

X

- Definition

Represents the number of cases that alleges a specific amount of damages sought during the period.

+ References

No definition available.

+ Details

Name:	ssd_LossContingencyNumberOfCasesThatAllegesDamages
Namespace Prefix:	ssd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Definition

The number of claims settled and dismissed during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyClaimsSettledAndDismissedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant