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Capital Stock
12 Months Ended
Dec. 31, 2012
Capital Stock [Abstract]  
Capital Stock
(12) Capital Stock
 
The Company is authorized to issue 2,000,000 shares of preferred stock, the terms and conditions to be determined by the Board of Directors in creating any particular series. As of December 31, 2012 and 2011, no shares of preferred stock had been issued.

During the quarter ended March 31, 2012, the Company completed an equity offering, which resulted in the issuance of 2,875,000 shares of common stock and net proceeds of $217.6 million.