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Common Stock and Treasury Stock | 12 Months Ended
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Dec. 31, 2011
Common Stock and Treasury Stock | 9. Common Stock and Treasury Stock The Company’s board of directors has approved a stock repurchase program authorizing the Company, from time to time as market and business conditions warrant, to acquire up to $210 million of its common stock. Under the program to date, the Company has purchased 8,082,180 shares for approximately $187.1 million. The Company did not repurchase shares under this program during the year ended December 31, 2011. The maximum remaining dollar value of shares authorized for purchase under the stock repurchase program was approximately $22.9 million as of December 31, 2011. Subsequent to December 31, 2011, in February 2012, the Company’s board of directors approved an increase of $52.1 million to their current stock repurchase authorization, bringing the total authorization to $262.1 million, of which $75 million remains available. During the year ended September 30, 2006, the Company began to issue shares of treasury stock upon exercise of stock options, payment of earned performance shares, issuance of restricted stock awards and for issuances of common stock pursuant to the Company’s employee stock purchase plan. Treasury shares issued during the year ended December 31, 2009 included 150,134 and 23,500 shares issued pursuant to stock option exercises and restricted share award grants, respectively. Treasury shares issued during the year ended December 31, 2010 included 235,986 and 25,950 shares issued pursuant to stock option exercises and restricted share award grants, respectively. Treasury shares issued during the year ended December 31, 2011 included 361,093 and 6,300 shares issued pursuant to stock option exercises and restricted share award grants, respectively.

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- Definition Share Repurchase Program Disclosure. + References No definition available. + Details
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