XML 63 R34.htm IDEA: XBRL DOCUMENT v3.2.0.727
Shares Underlying Stock Options, Employee Stock Purchase Plan Rights, and Warrants Excluded from Calculation of Weighted Average Number of Shares Outstanding used for Calculation of Diluted Net Loss Per Share (Detail) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted average number of anti-dilutive potential shares 9,895 12,160 5,793 11,587
Stock Options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted average number of anti-dilutive potential shares 6,910 12,160 5,793 11,587
Warrants        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted average number of anti-dilutive potential shares 2,985