XML 74 R58.htm IDEA: XBRL DOCUMENT v3.6.0.2
Stock-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]      
Stock-based compensation expense $ 14,126 $ 9,316 $ 6,089
Employees And Directors      
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]      
Stock-based compensation expense 14,126 9,316 6,062
Non Employee      
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]      
Stock-based compensation expense     27
Research and Development      
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]      
Stock-based compensation expense 6,742 4,123 2,868
General and Administrative      
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]      
Stock-based compensation expense $ 7,384 $ 5,193 $ 3,221