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September 2009 Financial Transactions (Tables)
 12 Months Ended
Dec. 31, 2012
September 2009 Financial Transactions  
Expenses and Losses (Gains) Related to September 2009 Financial Transactions
The table below sets forth the total expenses related to the September 2009 financial transactions for 2012, 2011 and 2010:
 
2012
2011
2010
 
(in thousands)
Expenses and Losses (Gains):
 
 
 
Interest expense related to 2012 Notes
$
—

$
21,687

$
15,068

Change in fair value of embedded derivative related to 2012 Notes
—

(400
)
1,637

Change in fair value of free-standing derivatives related to the sale of milestone payments
—

17,201

39,592

Total September 2009 financial transaction expenses
$
—

$
38,488

$
56,297