Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Weighted Average Common Shares Outstanding

	2011		2010		2009
Weighted average common shares outstanding:
Basic EPS calculation		110,626		110,442		110,268
Effect of dilutive share-based awards		52		79		84
Diluted EPS calculation		110,678		110,521		110,352

Common Stock Were Excluded From The Calculation Of Diluted EPS

	2011		2010		2009
Options to purchase shares of common stock		—		—		313,237
Weighted average exercise price of options excluded	$	—	$	—	$	29.26