Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Common Share - Reconciliation of Numerator and Denominator (Detail)

v2.4.0.6
Net Loss Per Common Share - Reconciliation of Numerator and Denominator (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Numerator:        
Net loss - basic $ (991) $ (4,125) $ (99,523) $ (20,378)
Less: noncash income from change in fair value of common stock warrants (2,967)      
Net loss - diluted $ (3,958) $ (4,125) $ (99,523) $ (20,378)
Denominator:        
Weighted average common shares outstanding 55,654 49,052 53,516 44,812
Dilutive effect of warrants 8,751      
Weighted-average common shares outstanding and potential dilutive common shares - diluted 64,405 49,052 53,516 44,812
Net loss per share        
Basic $ (0.02) $ (0.08) $ (1.86) $ (0.45)
Diluted $ (0.06) $ (0.08) $ (1.86) $ (0.45)