Acquisitions (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended		1 Months Ended		1 Months Ended
Jan. 31, 2009 RO Design Corp Simpson Strong Tie	Jan. 31, 2009 RO Design Corp North America Simpson Strong Tie Y	Apr. 30, 2009 Aginco Simpson Strong Tie Europe EURL	Apr. 30, 2009 Aginco Europe Simpson Strong Tie Europe EURL Y	Nov. 30, 2010 CGMI Socom S.A.S	Nov. 30, 2010 CGMI Europe Socom S.A.S Y	Dec. 31, 2011 Fox Industries, Inc. Simpson Strong Tie Y	Dec. 31, 2011 Automatic Stamping and Automatic Stamping Auxiliary Services Simpson Strong Tie Y
Acquisitions
Cash paid for acquisition	$ 4.0		$ 22.2		$ 5.2
Acquisition payable after closing treated as compensation	2.5
Goodwill		0.4		10.5		0.8	4.4	27.8
Intangible assets		1.1		6.0	1.5	1.5	2.8	6.3
Weighted-average amortization period (in years)		6.0		7.9		13.7	7.7	7.6
Purchase price							$ 8.7	$ 43.5

Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 39, 40, 41

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details