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Stock-Based Compensation (Schedule of Non-Vested Restricted Stock Activity) (Details) (Restricted stock, USD $)
0 Months Ended 12 Months Ended
Sep. 19, 2013
Sep. 15, 2012
May 31, 2012
Dec. 21, 2011
Dec. 31, 2013
Restricted stock
         
Number of Shares          
Beginning balance         5,024,400
Grants 659,500 525,000 755,000 4,710,000 659,500
Vested         (1,141,300)
Forfeitures         (915,000)
Ending balance         3,627,600
Weighted Average Grant Date Fair Value          
Beginning balance         $ 1.99
Grants $ 1.95 $ 2.98 $ 2.02 $ 1.89 $ 1.95
Vested         $ 2.12
Forfeitures         $ 2.08
Ending balance         $ 1.92