Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Components of Property and Equipment (Detail)

v3.3.1.900
Property and Equipment - Components of Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Property Plant And Equipment [Line Items]    
Total property and equipment, Gross $ 2,949 $ 2,865
Less: Accumulated depreciation and amortization (2,616) (2,308)
Total property and equipment, net 333 557
Computer and Office Equipment    
Property Plant And Equipment [Line Items]    
Total property and equipment, Gross 532 479
Laboratory Equipment    
Property Plant And Equipment [Line Items]    
Total property and equipment, Gross 1,894 1,838
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Total property and equipment, Gross $ 523 $ 548