Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 item	Sep. 30, 2011
Income Taxes
Effective tax rate (as a percent)	26.80%	23.50%	26.80%	26.30%
Provision for tax benefit relating to the previously announced flood damage at the Company's Sidney, New York facility		$ 4,700		$ 4,700
Charges related to flood in Sidney, New York		12,831		12,831
One-time tax benefit related to completion of prior year audits		4,500
One-time tax cost included in provision for taxes				6,600
Gain for the adjustment of a contingent acquisition related obligation				17,800
Minimum number of tax jurisdictions			60
Liability for unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate	26,684		26,684
Unrecognized tax benefits, anticipated adjustment for changing facts and circumstances, over the next twelve month period	$ 5,300		$ 5,300