Shareholder Rights Plan	12 Months Ended
Shareholder Rights Plan	Dec. 31, 2011
Shareholder Rights Plan
Shareholder Rights Plan	NOTE 16—SHAREHOLDER RIGHTS PLAN On May 7, 2002, and as amended on December 29, 2010, and May 20, 2011, the Board of Directors adopted a shareholder rights plan ("Rights Agreement") whereby one right was distributed for each share of common stock, par value $0.01 per share, of the Company held by shareholders of record (the "Rights") as of the close of business on May 31, 2002. The Rights initially entitle shareholders to buy a unit representing one one-hundredth of a share of a new series of preferred stock of the Company for $160 and expire on May 30, 2012. The Rights generally will be exercisable only if a person or group acquires beneficial ownership above the threshold established in the Rights Agreement of the Company's common stock or commences a tender or exchange offer upon consummation of which such person or group would beneficially own more than the threshold established in the Rights Agreement of the Company's common stock. If a person or group acquires beneficial ownership above the threshold established in the Rights Agreement of the Company's common stock, each Right (other than Rights held by the acquirer) will, unless the Rights are redeemed by the Company, become exercisable upon payment of the exercise price of $160 for an amount of common stock of the Company having a market value of twice the exercise price of the Right.

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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