Statement of Financial Position (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Common Stock, Par Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	400,000,000	400,000,000
Common Stock, Shares, Issued	112,488,604	112,177,627
Common Stock, Shares, Outstanding	112,488,604	112,177,627