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Share-Based Compensation (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Share Based Compensation Allocation of Recognized Period Costs        
Share-based compensation expense, Total $ 925 $ 71 $ 2,199 $ 519
Cost of Sales [Member]
       
Share Based Compensation Allocation of Recognized Period Costs        
Share-based compensation expense, Total 145 4 287 13
Selling, General and Administrative Expenses [Member]
       
Share Based Compensation Allocation of Recognized Period Costs        
Share-based compensation expense, Total $ 780 $ 67 $ 1,912 $ 506