Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Barnes Distribution North America [Member]	Feb. 22, 2013 Barnes Distribution North America [Member] Discontinued Operation or Asset Disposal [Member]	Dec. 31, 2012 Barnes Distribution North America [Member] Discontinued Operation or Asset Disposal [Member]
Subsequent Event [Line Items]
Proceeds from divestiture of businesses					$ 550,000
Revenues	1,229,959	1,169,355	1,028,617	300,000		300,000
Proceeds from the sale of businesses, net of cash sold					$ 400,000