Stockholders' Equity And Earnings (Loss) Per Share (Narrative) (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010		Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 2008 Stock Repurchase Program [Member]	Dec. 31, 2011 2011 Stock Repurchase Program [Member]	Nov. 30, 2011 2011 Stock Repurchase Program [Member]
Stockholders' Equity And Earnings Per Share [Line Items]
Share repurchased, authorized														3,000,000		1,300,000
Remaining shares available for purchase														331,976	1,300,000
Common stock, shares authorized	100,000,000					100,000,000					100,000,000	100,000,000
Common stock, par value	$ 0.01					$ 0.01					$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000					10,000,000					10,000,000	10,000,000
Preferred stock, par value	$ 0.01					$ 0.01					$ 0.01	$ 0.01
Common Stock, Shares, Outstanding	50,650,971					52,181,335					50,650,971	52,181,335
Cash dividends declared per common share (in dollars per share)	$ 0.05	[1]	$ 0.05	$ 0.05	$ 0.05	$ 0.05	[2]	$ 0.05	$ 0.05	$ 0.05	$ 0.20	$ 0.20	$ 0.05
Percentage of fair value of stock											50.00%

[1] Results for the quarter ended December 31, 2011 reflect corporate relocation and acquisition due diligence costs totaling $0.6 million ($0.4 million after income taxes) and a net foreign currency gain of $3.4 million related to the financing of the Robuschi acquisition.

[2] Results for the quarter ended December 31, 2010 reflect corporate relocation and acquisition due diligence costs totaling $4.8 million ($3.7 million after income taxes).