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Stock Repurchases
6 Months Ended
Jun. 30, 2011
Stock Repurchases [Abstract]  
Stock Repurchases
5.
Stock Repurchases

During the six months ended June 30, 2011, the Company repurchased and retired  100,000 shares of its common stock at an aggregate cost of $3.9 million under a stock repurchase program authorized in 2008 by the Company's Board of Directors. From the inception of the stock purchase program, the Company has repurchased and retired 3,099,371 shares of its common stock at an aggregate cost of $78 million. The Company is authorized to repurchase an additional $21.9 million for a total of $100.0 million.