Annual report pursuant to Section 13 and 15(d)

Income Taxes (Tables)

v2.4.0.8
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2013
Income Taxes [Abstract]  
Total provision for income taxes
The total (benefit) provision for income taxes consists of the following (in thousands):

   
Year ended December 31,
 
   
2013
   
2012
   
2011
 
Federal income tax (benefit) provision
  $ (14 )   $ (74 )   $ 15  
Total
  $ (14 )   $ (74 )   $ 15  

Components of net deferred tax assets
The significant components of net deferred tax assets as of December 31, 2013 and 2012 were as follows (in millions):

   
December 31,
 
   
2013
   
2012
 
Capitalized research and development expenses
  $ 49.4     $ 51.5  
Net operating loss carryforwards
    78.4       150.8  
Research and development and other credit carryforwards
    8.8       8.5  
Other
    23.5       23.3  
Total deferred tax assets
    160.1       234.1  
Valuation allowance
    (160.1 )     (234.1 )
Net deferred tax assets
  $ -     $ -  

Schedule of unrecognized tax benefits
The following table summarizes the Company's activity related to its unrecognized tax benefits (in thousands):

   
December 31,
2013
 
Balance at January 1, 2013
  $ 4,104  
Increase related to current year tax position
    164  
Increase related to prior year tax position
    6  
Balance at December 31, 2013
  $ 4,274