Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.0.6
Income Taxes (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]                      
Federal income tax (benefit) provision                 $ (74,000) $ 15,000 $ 27,000
Total 0 (74,000) 0 0 0 0 0 15,000 (74,000) 15,000 27,000
Significant components of net deferred tax assets [Abstract]                      
Capitalized research and development expenses 51,500,000       68,700,000       51,500,000 68,700,000  
Net operating loss carryforwards 150,800,000       135,700,000       150,800,000 135,700,000  
Research and development and other credit carryforwards 8,500,000       21,600,000       8,500,000 21,600,000  
Other 23,300,000       14,100,000       23,300,000 14,100,000  
Total deferred tax assets 234,100,000       240,100,000       234,100,000 240,100,000  
Valuation allowance (234,100,000)       (240,100,000)       (234,100,000) (240,100,000)  
Net deferred tax assets 0       0       0 0  
Increase (decrease) in the valuation allowance                 (6,000,000) 25,800,000 24,400,000
Unrecognized Tax Benefits [Roll Forward]                      
Beginning Balance       0         0    
Increase related to current year tax position                 49,000    
Increase related to prior year tax position                 4,054,000    
Ending Balance 4,103,000       0       4,103,000 0  
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 3,000,000               3,000,000    
Stock Option [Member]
                      
Operating Loss Carryforwards [Line Items]                      
Net Operating Loss Carry-forwards 500,000               500,000    
State [Member]
                      
Operating Loss Carryforwards [Line Items]                      
Net Operating Loss Carry-forwards 134,900,000               134,900,000    
Foreign [Member]
                      
Operating Loss Carryforwards [Line Items]                      
Net Operating Loss Carry-forwards 772,300,000               772,300,000    
Net operating loss carry-forward expired                 0 0 0
California [Member]
                      
Operating Loss Carryforwards [Line Items]                      
Net operating loss carry-forward expired                 10,400,000 9,500,000 300,000
Federal [Member]
                      
Operating Loss Carryforwards [Line Items]                      
Net Operating Loss Carry-forwards 137,100,000               137,100,000    
Net operating loss carry-forward expired                 $ 0 $ 0 $ 0