Annual report pursuant to Section 13 and 15(d)

Balance Sheets and Statements of Operations Details (Intangible Assets) (Details)

v2.4.0.6
Balance Sheets and Statements of Operations Details (Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 24,876 $ 24,876
Accumulated Amortization (11,942) (8,434)
Net Carrying Amount 12,934 16,442
Weighted- Average Amortization Period (years) 6 years  
Customer relationships [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 3,098 3,098
Accumulated Amortization (3,098) (3,040)
Net Carrying Amount 0 58
Weighted- Average Amortization Period (years) 5 years  
Developed and core technology [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,534 1,534
Accumulated Amortization (1,534) (1,457)
Net Carrying Amount 0 77
Weighted- Average Amortization Period (years) 5 years  
Maxygen intellectual property [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 20,244 20,244
Accumulated Amortization (7,310) (3,937)
Net Carrying Amount $ 12,934 $ 16,307
Weighted- Average Amortization Period (years) 6 years