Stockholders Equity - Authorized Capital (Details)	Dec. 31, 2012	Dec. 31, 2011	Feb. 16, 2011	Feb. 15, 2011
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized (shares)	5,000,000	5,000,000	5,000,000	5,000,000
Common stock, shares authorized (shares)	150,000,000	150,000,000	150,000,000	95,000,000
Capital stock, shares authorized (shares)			155,000,000	100,000,000