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Equity and Stock-Based Compensation (Restricted Stock Activity) (Details) (Restricted Stock [Member], USD $)
12 Months Ended
Dec. 31, 2012
Restricted Stock [Member]
 
Summary of Regular RSU activity  
Outstanding at beginning of year (number of shares) 439,000
Granted, (number of shares) 470,000
Vested, (number of shares) (138,000)
Forfeited, (number of shares) (130,000)
Outstanding at end of year (number of shares) 641,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Non-vested restricted stock at beginning of year, weighted-average grant date fair value (dollars per share) $ 7.83
Granted, weighted-average grant date fair value (dollars per share) $ 7.45
Vested, weighted-average grant date fair value (dollars per share) $ 8.39
Forfeited, weighted-average grant date fair value (dollars per share) $ 7.48
Non-vested restricted stock at en of year, weighted-average grant date fair value (dollars per share) $ 7.50