Stockholders' Equity (Details)	Dec. 31, 2013 classes votes	Dec. 31, 2012
Common Stock
Shares of common stock legally issued	141,123,904	137,797,855
Shares of common stock outstanding	141,123,904	137,797,855
Number of classes of authorized common stock	1
Number of votes per share of common stock owned	1
Preferred Stock
Authorized shares of preferred stock	50,000,000	50,000,000
Shares of preferred stock issued	0	0
Shares of preferred stock outstanding	0	0