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Shareholders' Equity Components of share-based compensation expense (Details) (USD $)
 0 Months Ended 12 Months Ended 12 Months Ended
Jul. 22, 2011
Dec. 31, 2012
Dec. 31, 2011
Nov. 19, 2010
Dec. 31, 2012
Cost of Sales [Member]
Dec. 31, 2011
Cost of Sales [Member]
Dec. 31, 2012
Research and Development Expense [Member]
Dec. 31, 2011
Research and Development Expense [Member]
Dec. 31, 2012
General and Administrative Expense [Member]
Dec. 31, 2011
General and Administrative Expense [Member]
Oct. 14, 2011
Employee Stock Option [Member]
2009 Equity Plan [Member]
Jan. 18, 2011
Employee Stock Option [Member]
2009 Equity Plan [Member]
Jun. 02, 2010
Employee Stock Option [Member]
2009 Equity Plan [Member]
Oct. 29, 2009
Employee Stock Option [Member]
2009 Equity Plan [Member]
May 09, 2009
Employee Stock Option [Member]
2009 Equity Plan [Member]
Oct. 14, 2011
Employee Stock Option [Member]
Non US Equity Plan [Member]
Jun. 02, 2010
Employee Stock Option [Member]
Non US Equity Plan [Member]
Oct. 29, 2009
Employee Stock Option [Member]
Non US Equity Plan [Member]
Dec. 31, 2012
2009 Equity Plan [Member]
US Equity Plan [Member]
Employee Stock Option [Member]
Dec. 31, 2012
2003 Equity Plan [Member]
US Equity Plan [Member]
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                        
Common Stock, Shares Authorized   500,000,000 500,000,000                               33,950,000 2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number                                     (20,296,380) (1,390,300)
Sale of Stock, Price Per Share       $ 0.945                                
Share-based Compensation Expense   $ 6,712,500 $ 10,266,000   $ 195,000 $ 96,900 $ 432,900 $ 867,800 $ 6,084,600 $ 9,301,300                    
Procceds From Sale Of Stock Gross 16,500,000                                      
Procceds From Sale Of Stock Net $ 14,800,000                                      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized                     23,750,000 17,750,000 13,750,000 9,750,000 3,800,000 5,700,000 8,700,000 4,700,000 9,042,138  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number                                     (5,000) (92,500)
Stock Issued During Period, Shares, Restricted Stock Award, Gross                                     (4,606,482) (889,939)
Common Stock, Shares, Outstanding   163,753,653 109,329,587                                 127,261