XML 35 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8
Reconciliation of Numerator and Denominator Used in Computation of Basic and Diluted Net Income Loss per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Numerator for Basic and Diluted:        
Net loss used for basic calculation $ (7,589) $ (6,724) $ (7,814) $ (16,976)
Effect of revaluation of warrant liability (4,007) (686) (13,041) 0
Adjusted net loss used for diluted calculation $ (11,596) $ (7,410) $ (20,855) $ (16,976)
Denominator:        
Basic weighted average number of shares outstanding 72,899 69,727 72,495 64,756
Effect of dilutive potential shares 1,618 2,201 2,432 0
Diluted weighted average number of shares outstanding 74,517 71,928 74,927 64,756
Net loss per share:        
Basic $ (0.10) $ (0.10) $ (0.11) $ (0.26)
Diluted $ (0.16) $ (0.10) $ (0.28) $ (0.26)