Stock Repurchase Program	12 Months Ended
Stock Repurchase Program	Dec. 31, 2011
Stock Repurchase Program [Abstract]
Stock Repurchase Program	14. STOCK REPURCHASE PROGRAM During 2011, we repurchased 8.1 million shares of our common stock for approximately $150.4 million at an average price of $18.67 per share. On November 14, 2011, the Board of Directors authorized an additional $100.0 million to repurchase outstanding shares of its common stock under the Company's stock repurchase program. Including this additional authorized repurchase amount, as of December 31, 2011, approximately $239.8 million was available under our authorized stock repurchase program to repurchase outstanding shares of our common stock. Stock repurchases under this program may be made on the open market or in privately negotiated transactions from time to time, depending on various factors, including market conditions and corporate and regulatory requirements. The stock repurchase program does not have an expiration date and may be suspended or discontinued at any time. The repurchase of shares of our common stock reduces the amount of cash available to pay cash dividends to our stockholders. We have never paid cash dividends on our common stock. On November 21, 2011, we entered into a stock repurchase plan established in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended (the "1934 Act"), in connection with our previously authorized stock repurchase program. A Rule 10b5-1 plan allows a company to repurchase its shares at times when it otherwise might be unable to do so under the 1934 Act's insider trading rules. This stock repurchase plan facilitated purchases of our common stock under our previously authorized stock repurchase program. Purchases of common stock under this plan were subject to specified parameters and certain price and volume restraints as established in the plan. During January 2012, our designated broker repurchased on our behalf an additional 6.1 million shares of our common stock for $56.4 million at an average price of $9.29 per share under this plan. As a result, approximately $183.3 million was available under our previously authorized stock repurchase program to repurchase outstanding shares of our common stock as of January 31, 2012.

Tabular disclosure of an entity's treasury stock, including the average cost per share, carrying basis for each class of treasury stock, description of share repurchase program authorized by an entity's board of directors, the number of shares repurchased, the cost of the shares repurchased, the remaining maximum dollar value of shares available for repurchase under the program, the treatment of the purchase price in excess of the current market value, number of shares held for each class of treasury stock, and other information necessary to a fair presentation.

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