Subsequent Events

3 Months Ended

Mar. 31, 2012

Subsequent Events [Abstract]

Subsequent Events

13. Subsequent Events

In April 2012, we completed a secondary offering that allowed certain of our stockholders to sell 49.4 million shares of Class A common stock for approximately $593 million, net of underwriting discounts and commissions of approximately $18 million, including the full exercise of the underwriters' option to purchase additional shares. The Company did not receive any proceeds from the sale of the shares. The principal purpose of the offering was to facilitate an orderly distribution of shares and to increase our public float.