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Stockholders' Equity
9 Months Ended
Sep. 30, 2011
Stockholders' Equity [Abstract] 
Stockholders' Equity

10. Stockholders' Equity

In March 2011, we contributed approximately 1.0 million newly issued shares of our common stock, valued at $15.03 per share, to our ESOP for amounts earned by participants during the year ended December 31, 2010.

In February 2011, we contributed approximately 0.2 million newly issued shares of our common stock, valued at $16.23 per share, to our 401(k) plan for amounts earned by participants during the year ended December 31, 2010.