Consolidated Balance Sheets Parentheticals (USD $)	Jun. 30, 2013	Dec. 31, 2012
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	395,000,000	395,000,000
Common Stock, Shares, Issued	90,689,000	90,689,000
Common Stock, Shares, Outstanding	84,837,000	84,770,000
Treasury Stock, Shares	5,852,000	5,919,000