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Stock-Based Compensation (Details 1) (Restricted Stock [Member], USD $)
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Restricted Stock [Member]
   
Information with respect to unvested restricted stock awards Stock Option and Incentive Plan    
Outstanding at December 31, 2011, Weighted-Average Grant Date Fair Value     
Issued, Number of Restricted Stock Awards 200,000  
Issued, Weighted-Average Grant Date Fair Value $ 12.91  
Outstanding at June 30, 2012, Number of Restricted Stock Awards 200,000   
Outstanding at June 30, 2012, Weighted-Average Grant Date Fair Value $ 12.91