Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Net Loss Per Common Share - Reconciliation of Numerator and Denominator (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:        
Net loss - basic $ (766) $ (12,788) $ (7,875) $ (22,002)
Less: noncash income from change in fair value of common stock warrants (6,665)   (8,122)  
Net loss - diluted $ (7,431) $ (12,788) $ (15,997) $ (22,002)
Denominator:        
Weighted average common shares outstanding 59,347 57,037 59,325 56,763
Dilutive effect of warrants 3,651   4,108  
Weighted-average common shares outstanding and dilutive potential common shares — diluted 62,998 57,037 63,433 56,763
Net income (loss) per share        
Basic $ (0.01) $ (0.22) $ (0.13) $ (0.39)
Diluted $ (0.12) $ (0.22) $ (0.25) $ (0.39)