Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Common Share - Warrants Options and Purchase Rights Excluded From Computation of Diluted Net Loss Per Share (Detail)

v2.4.0.6
Net Loss Per Common Share - Warrants Options and Purchase Rights Excluded From Computation of Diluted Net Loss Per Share (Detail)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Warrant [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares issuable   16,643 11,726 16,643
Stock Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares issuable 5,129 3,531 5,129 3,531
Employee Stock Purchase Plan (ESPP) [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares issuable 48 40 48 40