Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Net Income (Loss) Per Common Share - Reconciliation of Numerator and Denominator (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Numerator:                      
Net income (loss) - basic $ 69,713 $ (6,431) $ (8,306) $ (11,154) $ (5,964) $ (7,745) $ (766) $ (7,109) $ 43,822 $ (21,584) $ (28,415)
Less: noncash income from change in fair value of common stock warrants                 3,906 9,344  
Net income (loss) - diluted                 $ 39,916 $ (30,928) $ (28,415)
Denominator:                      
Weighted-average number of common shares outstanding                 70,242 60,335 57,832
Dilutive effect of equity incentive awards                 1,873    
Dilutive effect of warrants                 1,368 3,051  
Weighted-average common shares outstanding and dilutive potential common share-diluted                 73,483 63,386 57,832
Net income (loss) per share:                      
Basic $ 0.98 $ (0.09) $ (0.12) $ (0.17) $ (0.09) $ (0.13) $ (0.01) $ (0.12) $ 0.62 $ (0.36) $ (0.49)
Diluted $ 0.86 $ (0.09) $ (0.12) $ (0.17) $ (0.12) $ (0.15) $ (0.12) $ (0.14) $ 0.54 $ (0.49) $ (0.49)