Business Acquisitions (Details 6) (USD $) In Thousands, unless otherwise specified				9 Months Ended				9 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2013 Mt Pulaski		Oct. 30, 2012 Mt Pulaski	Oct. 30, 2012 Trademarks Mt Pulaski	Sep. 30, 2013 Customer list Mt Pulaski	Oct. 30, 2012 Customer list Mt Pulaski	Sep. 30, 2013 Noncompete agreement	Sep. 30, 2013 Noncompete agreement Mt Pulaski	Oct. 30, 2012 Noncompete agreement Mt Pulaski
Business Acquisition [Line Items]
Inventory						$ 3,757
Intangible assets						1,000
Goodwill	58,554	51,418	19,226			1,985
Property, plant and equipment						3,941
Intangible assets acquired						1,000			600			100
Indefinite-lived intangible assets acquired							300
Useful Life								10 years		2 years	7 years
Weighted average useful life				10 years	[1]
Total Purchase Price						$ 10,683

[1] weighted average number of years