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Long-term Debt (Narrative) (Details 3) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Long-Term Debt Narrative Details 3        
Number of common shares issued 0 0 0 6,149,727
Convertible notes retired $ 0 $ 0 $ 0 $ 33.5
Conversion price before August 7, 2014, per share $ 5.44   $ 5.44  
Percentage redemption price into common stock after August 7, 2012 100.00%   100.00%