Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Information - Quarterly Financial Information (Detail)

v3.6.0.2
Quarterly Financial Information - Quarterly Financial Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Collaboration revenue     $ 2,122 $ 2,940 $ 6,024 $ 6,737 $ 4,025 $ 1,374 $ 5,062 $ 18,160 $ 27,116
Research and development $ 1,702 $ 3,782 4,662 4,642 6,587 8,303 6,545 3,673 14,788 25,108 46,224
General and administrative 2,295 1,864 2,475 2,299 2,915 3,125 3,067 2,698 8,933 11,805 10,625
Restructuring costs (recovery) 1,814 (31) (8) 431         2,206   (267)
Recovery of lease termination loss   (1,250)             (1,250)    
Litigation settlement     1,375           1,375    
Asset impairment charge 202               202    
Total operating expenses 6,013 4,365 8,504 7,372 9,502 11,428 9,612 6,371 26,254 36,913 56,582
Other income 170 675 (507) 725 1,756 141 (423) 480 1,063 1,952 3,226
Net loss $ (5,843) $ (3,690) $ (6,889) $ (3,707) $ (1,722) $ (4,550) $ (6,010) $ (4,517) $ (20,129) $ (16,801) $ (26,240)
Basic and diluted net loss per share $ (0.19) $ (0.12) $ (0.23) $ (0.12) $ 0.06 $ 0.16 $ 0.26 $ 0.20 $ (0.67) $ (0.64) $ (1.45)