Commitments and Contingencies (Details Textual) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Product Liability/Warranty Contingency [Line Items]
Product Liability re-evaluation adjustment	$ 1.4
Product Liability re-evaluation adjustment	(1.8)
Commitments and Contingencies (Textuals) [Abstract]
Self insurance liabilities recorded in Accrued expenses	67.6	61.3
Warranty Liability Re-evaluation [Member]
Product Liability/Warranty Contingency [Line Items]
Product Liability re-evaluation adjustment	$ 2.5